diff --git a/docs/cooperation/cooperation-schema.yaml b/docs/cooperation/cooperation-schema.yaml
index 6c8fc989..20ec1f4b 100644
--- a/docs/cooperation/cooperation-schema.yaml
+++ b/docs/cooperation/cooperation-schema.yaml
@@ -6,17 +6,52 @@ definitions:
       properties:
         _id:
           type: string
+        proficiencyLevel:
+          type: array
+          items:
+            type: string
+        subject:
+          type: object
+          properties:
+            name:
+              type: string
+        category:
+          type: object
+          properties:
+            appearance:
+              type: object
+              properties:
+                color:
+                  type: string
+                icon:
+                  type: string
+        user:
+          type: object
+          properties:
+            _id:
+              type: string
+            firstName:
+              type: string
+            lastName:
+              type: string
+            photo:
+              type: string
+            role:
+              type: string
+        description:
+          type: string
+        languages:
+          type: array
+          items:
+            type: string
         offer:
           type: string
-          ref: '#components/offer'
         initiator:
           type: string
-          ref: '#/components/user'
         initiatorRole:
           type: string
         receiver:
           type: string
-          ref: '#components/user'
         receiverRole:
           type: string
         price:
@@ -185,28 +220,11 @@ definitions:
         properties:
           _id:
             type: string
-          proficiencyLevel:
-            type: array
-            items:
-              type: string
-          title:
-            type: string
-          description:
-            type: string
-          languages:
-            type: array
-            items:
-              type: string
           author:
             type: object
             properties:
-              totalReviews:
-                type: object
-                properties:
-                  student:
-                    type: integer
-                  tutor:
-                    type: integer
+              _id:
+                type: string
               averageRating:
                 type: object
                 properties:
@@ -214,8 +232,6 @@ definitions:
                     type: number
                   tutor:
                     type: number
-              _id:
-                type: string
               firstName:
                 type: string
               lastName:
@@ -224,246 +240,57 @@ definitions:
                 type: string
               professionalSummary:
                 type: string
-          subject:
-            type: object
-            properties:
-              _id:
-                type: string
-              name:
-                type: string
-          category:
-            type: object
-            properties:
-              appearance:
+              totalReviews:
                 type: object
                 properties:
-                  color:
-                    type: string
-                  icon:
-                    type: string
-              _id:
-                type: string
-              name:
-                type: string
+                  student:
+                    type: number
+                  tutor:
+                    type: number
       initiator:
+        type: string
+      initiatorRole:
+        type: string
+      proficiencyLevel:
+        type: array
+        items:
+          type: string
+      subject:
         type: object
         properties:
-          address:
-            type: object
-            properties:
-              country:
-                type: string
-              city:
-                type: string
-          mainSubjects:
-            type: object
-            properties:
-              student:
-                type: array
-                items:
-                  type: string
-              tutor:
-                type: array
-                items:
-                  type: string
-          totalReviews:
-            type: object
-            properties:
-              student:
-                type: integer
-              tutor:
-                type: integer
-          averageRating:
-            type: object
-            properties:
-              student:
-                type: number
-              tutor:
-                type: number
-          status:
-            type: object
-            properties:
-              student:
-                type: string
-              tutor:
-                type: string
-              admin:
-                type: string
-          videoLink:
-            type: object
-            properties:
-              student:
-                type: string
-          professionalBlock:
-            type: object
-            properties:
-              awards:
-                type: string
-              scientificActivities:
-                type: string
-              workExperience:
-                type: string
-              education:
-                type: string
-          notificationSettings:
-            type: object
-            properties:
-              isOfferStatusNotification:
-                type: boolean
-              isChatNotification:
-                type: boolean
-              isSimilarOffersNotification:
-                type: boolean
-              isEmailNotification:
-                type: boolean
-          _id:
-            type: string
-          role:
-            type: array
-            items:
-              type: string
-          firstName:
-            type: string
-          lastName:
-            type: string
-          email:
-            type: string
-          nativeLanguage:
-            type: string
-          lastLogin:
-            type: string
-          createdAt:
-            type: string
-          updatedAt:
-            type: string
-          professionalSummary:
+          name:
             type: string
-      initiatorRole:
-        type: string
-      receiver:
+      category:
         type: object
         properties:
-          address:
+          appearance:
             type: object
             properties:
-              country:
+              color:
                 type: string
-              city:
+              icon:
                 type: string
-          mainSubjects:
-            type: object
-            properties:
-              student:
-                type: array
-                items:
-                  type: string
-              tutor:
-                type: array
-                items:
-                  type: object
-                  properties:
-                    category:
-                      type: string
-                    subjects:
-                      type: array
-                      items:
-                        type: string
-                    _id:
-                      type: string
-          totalReviews:
-            type: object
-            properties:
-              student:
-                type: integer
-              tutor:
-                type: integer
-          averageRating:
-            type: object
-            properties:
-              student:
-                type: number
-              tutor:
-                type: number
-          status:
-            type: object
-            properties:
-              student:
-                type: string
-              tutor:
-                type: string
-              admin:
-                type: string
-          videoLink:
-            type: object
-            properties:
-              tutor:
-                type: string
-          professionalBlock:
-            type: object
-            properties:
-              awards:
-                type: string
-              scientificActivities:
-                type: string
-              workExperience:
-                type: string
-              education:
-                type: string
-          notificationSettings:
-            type: object
-            properties:
-              isOfferStatusNotification:
-                type: boolean
-              isChatNotification:
-                type: boolean
-              isSimilarOffersNotification:
-                type: boolean
-              isEmailNotification:
-                type: boolean
-          _id:
-            type: string
-          role:
-            type: array
-            items:
-              type: string
-          firstName:
-            type: string
-          lastName:
-            type: string
-          email:
-            type: string
-          nativeLanguage:
-            type: string
-          lastLogin:
-            type: string
-          createdAt:
-            type: string
-          updatedAt:
-            type: string
-          photo:
-            type: string
-          professionalSummary:
-            type: string
-      receiverRole:
+      description:
         type: string
-      title:
+      languages:
+        type: array
+        items:
+          type: string
+      receiver:
         type: string
-      proficiencyLevel:
+      receiverRole:
         type: string
       price:
-        type: integer
-      status:
+        type: number
+      title:
         type: string
-      needAction:
+      status:
         type: string
-      availableQuizzes:
-        type: array
-        items:
-          type: string
-      finishedQuizzes:
-        type: array
-        items:
-          type: string
+        enum:
+          - pending
+          - active
+          - declined
+          - closed
       sections:
         type: array
         items:
@@ -501,7 +328,14 @@ definitions:
                         type: string
                         format: date-time
                         default: null
+      needAction:
+        type: string
+        enum:
+          - student
+          - tutor
       createdAt:
         type: string
+        format: date-time
       updatedAt:
         type: string
+        format: date-time
diff --git a/docs/cooperation/cooperation.yaml b/docs/cooperation/cooperation.yaml
index f68472de..e8fe656d 100644
--- a/docs/cooperation/cooperation.yaml
+++ b/docs/cooperation/cooperation.yaml
@@ -24,7 +24,19 @@ paths:
                   receiver: 6255bc080a75adf9223df100
                   receiverRole: student
                   title: 'Violin lessons'
-                  proficiencyLevel: Intermediate
+                  proficiencyLevel: ['Intermediate']
+                  subject: { name: 'Music' }
+                  category: { appearance: { color: '#E3B21C', icon: 'ScienceRoundedIcon' } }
+                  user:
+                    {
+                      _id: '66b0aecdadd1fe775238c7d5',
+                      firstName: 'Pavlo',
+                      lastName: 'Dolia',
+                      photo: '1726302778023-pexels-olly-3769706.jpg',
+                      role: 'student'
+                    }
+                  description: "I'll teach you how to play violin"
+                  languages: ['English']
                   price: 200
                   status: active
                   needAction: student
@@ -40,7 +52,19 @@ paths:
                   receiver: 6255bc080a75adf9223df100
                   receiverRole: student
                   title: 'Violin lessons'
-                  proficiencyLevel: Intermediate
+                  proficiencyLevel: ['Intermediate']
+                  subject: { name: 'Music' }
+                  category: { appearance: { color: '#E3B21C', icon: 'ScienceRoundedIcon' } }
+                  user:
+                    {
+                      _id: '66b0aecdadd1fe775238c7d5',
+                      firstName: 'Pavlo',
+                      lastName: 'Dolia',
+                      photo: '1726302778023-pexels-olly-3769706.jpg',
+                      role: 'student'
+                    }
+                  description: "I'll teach you how to play violin"
+                  languages: ['English']
                   price: 300
                   status: closed
                   needAction: tutor
@@ -77,9 +101,18 @@ paths:
               $ref: '#/definitions/cooperation'
             example:
               offer: 63ebc6fbd2f34037d0aba791
+              initiator: 6255bc080a75adf9223df212
+              initiatorRole: tutor
               receiver: 6255bc080a75adf9223df100
               receiverRole: student
+              title: 'Violin lessons'
+              proficiencyLevel: ['Intermediate']
               price: 300
+              needAction: tutor
+              subject: 6255bc080a75adf9223df103
+              category: 6255bc080a75adf9223df104
+              description: "I'll teach you how to play violin"
+              languages: ['English']
       responses:
         201:
           description: Created
@@ -89,13 +122,21 @@ paths:
                 $ref: '#/definitions/cooperation'
               example:
                 _id: 8755bc080a00adr9243df104
-                offer: 63ebc6fbd2f34037d0aba791
+                offer:
+                  {
+                    _id: '66ec53d40d9d9983a9525421',
+                    price: 400,
+                    title: 'Violin lessons',
+                    subject: { _id: '656605be8bebd72f0be56a3d', name: 'Violin' },
+                    category:
+                      { appearance: { icon: 'StarRoundedIcon', color: '#607D8B' }, _id: '6566040f8bebd72f0be55a28' }
+                  }
                 initiator: 6255bc080a75adf9223df212
                 initiatorRole: tutor
                 receiver: 6255bc080a75adf9223df100
                 receiverRole: student
                 title: 'Violin lessons'
-                proficiencyLevel: Intermediate
+                proficiencyLevel: ['Intermediate']
                 price: 300
                 status: pending
                 needAction: student
@@ -104,6 +145,18 @@ paths:
                 sections: []
                 createdAt: 2021-04-09T11:34:53.243+00:00
                 updatedAt: 2022-09-02T11:59:53.243+00:00
+                category: '6566040f8bebd72f0be55a28'
+                description: "I'll teach you how to play violin"
+                languages: ['English']
+                subject: { _id: '656605be8bebd72f0be56a3d', name: 'Violin' }
+                user:
+                  {
+                    _id: '66b0aecdadd1fe775238c7d5',
+                    firstName: 'John',
+                    lastName: 'Doe',
+                    photo: '1726302778023-pexels-olly-3769706.jpg',
+                    role: 'student'
+                  }
         400:
           description: Bad Request
           content:
@@ -150,38 +203,24 @@ paths:
                 $ref: '#/definitions/cooperationResponse'
               example:
                 _id: 8755bc080a00adr9243df106
+                description: "I'll teach you how to play violin"
+                languages: ['English']
+                subject: { name: 'Music' }
+                category: { appearance: { color: '#E3B21C', icon: 'ScienceRoundedIcon' } }
                 offer:
-                  _id: 63ebc6fbd2f34037d0aba791
-                  proficiencyLevel:
-                    - Intermediate
-                    - Advanced
-                    - Test Preparation
-                    - Professional
-                  title: 'Understanding Quadratic Equations'
-                  description: "In this lesson, we will delve into the world of quadratic equations. We'll explore the standard form of a quadratic equation, learn how to identify the coefficients, and understand the significance of the discriminant. Students will also practice solving quadratic equations using various methods, including factoring, completing the square, and the quadratic formula. By the end of the lesson, students will be able to solve quadratic equations confidently and understand their graphical representations."
-                  languages:
-                    - English
-                  author:
-                    totalReviews:
-                      student: 0
-                      tutor: 0
-                    averageRating:
-                      student: 0
-                      tutor: 0
-                    _id: 6658f73f93885febb491e08b
-                    firstName: 'John'
-                    lastName: 'Doe'
-                    photo: '6658f73f93885-test_student.png'
-                    professionalSummary: 'I am student of the University of Cambridge. I am passionate about learning mathematics.'
-                  subject:
-                    _id: 6566133a2bccdd3e18dbe943
-                    name: 'Algebra'
-                  category:
-                    appearance:
-                      color: '#E3B21C'
-                      icon: 'TagRoundedIcon'
-                    _id: '64884f33fdc2d1a130c24ac2'
-                    name: 'Mathematics'
+                  {
+                    _id: 63ebc6fbd2f34037d0aba791,
+                    author:
+                      {
+                        _id: '66a7abbab3168fa64a8f5af1',
+                        averageRating: { student: 0, tutor: 0 },
+                        firstName: 'John',
+                        lastName: 'Doe',
+                        photo: '1726302583778-pexels-vanessa-garcia-6326377.jpg',
+                        professionalSummary: 'I have 12 years of experience',
+                        totalReviews: { student: 0, tutor: 0 }
+                      }
+                  }
                 initiator:
                   address:
                     country: 'USA'
@@ -279,7 +318,7 @@ paths:
                   professionalSummary: 'Recently graduated from the University of Cambridge with a degree in Mathematics. I have been tutoring students in Mathematics for over 5 years and have helped many students achieve their academic goals. I am passionate about teaching and enjoy helping students understand complex mathematical concepts. I believe that every student has the potential to succeed and I am committed to helping them reach their full potential.'
                 receiverRole: 'tutor'
                 title: 'Understanding Quadratic Equations'
-                proficiencyLevel: 'Intermediate'
+                proficiencyLevel: ['Intermediate']
                 price: 150
                 status: 'active'
                 needAction: 'tutor'
diff --git a/docs/coursesCooperations/coursesCooperations-schema.yaml b/docs/coursesCooperations/coursesCooperations-schema.yaml
index 959b54ee..171b226b 100644
--- a/docs/coursesCooperations/coursesCooperations-schema.yaml
+++ b/docs/coursesCooperations/coursesCooperations-schema.yaml
@@ -100,7 +100,19 @@ definitions:
             price:
               type: number
             proficiencyLevel:
+              type: array
+              items:
+                type: string
+            subject:
+              type: string
+            category:
               type: string
+            description:
+              type: string
+            languages:
+              type: array
+              items:
+                type: string
             receiver:
               type: string
             receiverRole:
diff --git a/docs/coursesCooperations/coursesCooperations.yaml b/docs/coursesCooperations/coursesCooperations.yaml
index ea8885f1..fa1a0f12 100644
--- a/docs/coursesCooperations/coursesCooperations.yaml
+++ b/docs/coursesCooperations/coursesCooperations.yaml
@@ -28,7 +28,11 @@ paths:
                       needAction: 'tutor',
                       offer: '66ec53d40d9d9983a9525421',
                       price: 500,
-                      proficiencyLevel: 'Beginner',
+                      proficiencyLevel: ['Beginner'],
+                      description: "I'll teach you how to follow healthy diet",
+                      languages: ['English'],
+                      subject: '656605be8bebd72f0be55a3d',
+                      category: '6566040f8bebd72f0be55a28',
                       receiver: '66a7abbab3168fa64a8f5af1',
                       receiverRole: 'tutor',
                       sections:
diff --git a/jest.config.js b/jest.config.js
index e4d74660..dc7157fe 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,7 +1,8 @@
 module.exports = {
   roots: ['<rootDir>/src/test'],
   moduleNameMapper: {
-    '^~/(.*)$': '<rootDir>/src/$1'
+    '^~/(.*)$': '<rootDir>/src/$1',
+    '@root/(.*)': '<rootDir>/$1'
   },
   verbose: true,
   testEnvironment: 'node',
@@ -27,6 +28,10 @@ module.exports = {
   coverageReporters: ['html', 'lcov'],
   coverageDirectory: '<rootDir>/src/test/coverage',
   testTimeout: 12000,
-  testMatch: ['<rootDir>/src/test/integration/**/*.spec.js', '<rootDir>/src/test/unit/**/*.spec.js'],
+  testMatch: [
+    '<rootDir>/src/test/integration/**/*.spec.js',
+    '<rootDir>/src/test/unit/**/*.spec.js',
+    '<rootDir>/src/test/migrations/*.spec.js'
+  ],
   testResultsProcessor: 'jest-sonar-reporter'
 }
diff --git a/migrate-mongo-config.js b/migrate-mongo-config.js
new file mode 100644
index 00000000..f400aba6
--- /dev/null
+++ b/migrate-mongo-config.js
@@ -0,0 +1,18 @@
+const config = {
+  mongodb: {
+    url: 'mongodb://127.0.0.1:27017/s2s',
+
+    options: {
+      useNewUrlParser: true,
+      useUnifiedTopology: true
+    }
+  },
+
+  migrationsDir: 'migrations',
+  changelogCollectionName: 'changelog',
+  migrationFileExtension: '.js',
+  useFileHash: false,
+  moduleSystem: 'commonjs'
+}
+
+module.exports = config
diff --git a/migrations/20241106160527-add-fields-to-cooperations.js b/migrations/20241106160527-add-fields-to-cooperations.js
new file mode 100644
index 00000000..c738d02e
--- /dev/null
+++ b/migrations/20241106160527-add-fields-to-cooperations.js
@@ -0,0 +1,48 @@
+module.exports = {
+  async up(db) {
+    await db
+      .collection('cooperation')
+      .aggregate([
+        {
+          $lookup: {
+            from: 'offers',
+            localField: 'offer',
+            foreignField: '_id',
+            as: '_tmp_offers_array'
+          }
+        },
+        { $set: { _tmp_offer: { $first: '$_tmp_offers_array' } } },
+        {
+          $set: {
+            subject: '$_tmp_offer.subject',
+            category: '$_tmp_offer.category',
+            description: '$_tmp_offer.description',
+            languages: '$_tmp_offer.languages',
+            proficiencyLevel: '$_tmp_offer.proficiencyLevel'
+          }
+        },
+        {
+          $project: {
+            subject: 1,
+            category: 1,
+            description: 1,
+            languages: 1,
+            proficiencyLevel: 1
+          }
+        },
+        { $merge: { into: 'cooperation', on: '_id' } }
+      ])
+      .toArray()
+  },
+
+  async down(db) {
+    await db.collection('cooperation').updateMany({}, [
+      {
+        $unset: ['subject', 'category', 'description', 'languages']
+      },
+      {
+        $set: { proficiencyLevel: { $first: '$proficiencyLevel' } }
+      }
+    ])
+  }
+}
diff --git a/package-lock.json b/package-lock.json
index 183d8c9c..13887253 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,6 +11,7 @@
       "dependencies": {
         "azure-storage": "^2.10.7",
         "bcrypt": "^5.0.1",
+        "cookie": "^0.6.0",
         "cookie-parser": "^1.4.6",
         "cors": "^2.8.5",
         "cron": "^2.1.0",
@@ -26,6 +27,7 @@
         "multer": "^1.4.5-lts.1",
         "nodemailer": "^6.7.7",
         "pug": "^3.0.2",
+        "socket.io": "^4.7.5",
         "swagger-jsdoc": "^6.1.0",
         "swagger-ui-express": "^4.3.0",
         "winston": "^3.8.0",
@@ -38,6 +40,7 @@
         "jest": "^28.1.3",
         "jest-sonar-reporter": "^2.0.0",
         "lint-staged": "^13.0.2",
+        "migrate-mongo": "^11.0.0",
         "nodemon": "^2.0.15",
         "prettier": "2.5.1",
         "supertest": "^6.2.4"
@@ -1370,6 +1373,18 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/runtime": {
+      "version": "7.26.0",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.26.0.tgz",
+      "integrity": "sha512-FDSOghenHTiToteC/QRlv2q3DhPZ/oOXTBoirfWNx1Cx3TMVcGWQtMMmQcSvb/JjpNeGzx8Pq/b4fKEJuWm1sw==",
+      "dev": true,
+      "dependencies": {
+        "regenerator-runtime": "^0.14.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.23.9",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.23.9.tgz",
@@ -2750,6 +2765,11 @@
         "node": ">=14.0.0"
       }
     },
+    "node_modules/@socket.io/component-emitter": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@socket.io/component-emitter/-/component-emitter-3.1.2.tgz",
+      "integrity": "sha512-9BCxFwvbGg/RsZK9tjXd8s4UcwR0MWeFQ1XEKIQVVvAGJyINdrqKMcTRyLoK8Rse1GjzLV9cwjWV1olXRWEXVA=="
+    },
     "node_modules/@types/babel__core": {
       "version": "7.20.5",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
@@ -2791,6 +2811,19 @@
         "@babel/types": "^7.20.7"
       }
     },
+    "node_modules/@types/cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-XW/Aa8APYr6jSVVA1y/DEIZX0/GMKLEVekNG727R8cs56ahETkRAy/3DR7+fJyh7oUgGwNQaRfXCun0+KbWY7Q=="
+    },
+    "node_modules/@types/cors": {
+      "version": "2.8.17",
+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.17.tgz",
+      "integrity": "sha512-8CGDvrBj1zgo2qE+oS3pOCyYNqCPryMWY2bGfwA0dcfopWGgxs+78df0Rs3rc9THP4JkOhLsAa+15VdpAqkcUA==",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/graceful-fs": {
       "version": "4.1.9",
       "resolved": "https://registry.npmjs.org/@types/graceful-fs/-/graceful-fs-4.1.9.tgz",
@@ -3320,6 +3353,14 @@
         }
       ]
     },
+    "node_modules/base64id": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/base64id/-/base64id-2.0.0.tgz",
+      "integrity": "sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==",
+      "engines": {
+        "node": "^4.5.0 || >= 5.9"
+      }
+    },
     "node_modules/bcrypt": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/bcrypt/-/bcrypt-5.1.1.tgz",
@@ -3792,6 +3833,60 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/cli-table3": {
+      "version": "0.6.5",
+      "resolved": "https://registry.npmjs.org/cli-table3/-/cli-table3-0.6.5.tgz",
+      "integrity": "sha512-+W/5efTR7y5HRD7gACw9yQjqMVvEMLBHmboM/kPWam+H+Hmyrgjh6YncVKK122YZkXrLudzTuAukUw9FnMf7IQ==",
+      "dev": true,
+      "dependencies": {
+        "string-width": "^4.2.0"
+      },
+      "engines": {
+        "node": "10.* || >= 12.*"
+      },
+      "optionalDependencies": {
+        "@colors/colors": "1.5.0"
+      }
+    },
+    "node_modules/cli-table3/node_modules/@colors/colors": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/@colors/colors/-/colors-1.5.0.tgz",
+      "integrity": "sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==",
+      "dev": true,
+      "optional": true,
+      "engines": {
+        "node": ">=0.1.90"
+      }
+    },
+    "node_modules/cli-table3/node_modules/emoji-regex": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+      "dev": true
+    },
+    "node_modules/cli-table3/node_modules/is-fullwidth-code-point": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
+      "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/cli-table3/node_modules/string-width": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+      "dev": true,
+      "dependencies": {
+        "emoji-regex": "^8.0.0",
+        "is-fullwidth-code-point": "^3.0.0",
+        "strip-ansi": "^6.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/cli-truncate": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/cli-truncate/-/cli-truncate-3.1.0.tgz",
@@ -4053,9 +4148,9 @@
       "dev": true
     },
     "node_modules/cookie": {
-      "version": "0.4.1",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.1.tgz",
-      "integrity": "sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==",
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.6.0.tgz",
+      "integrity": "sha512-U71cyTamuh1CRNCfpGY6to28lxvNwPG4Guz/EVjgf3Jmzv0vlDp1atT9eS5dDjMYHucpHbWns6Lwf3BKz6svdw==",
       "engines": {
         "node": ">= 0.6"
       }
@@ -4072,6 +4167,14 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/cookie-parser/node_modules/cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/cookie-signature": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
@@ -4160,6 +4263,22 @@
         "node": ">=0.10"
       }
     },
+    "node_modules/date-fns": {
+      "version": "2.30.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-2.30.0.tgz",
+      "integrity": "sha512-fnULvOpxnC5/Vg3NCiWelDsLiUc9bRwAPs/+LfTLNvetFCtCTN+yQz15C/fs4AwX1R9K5GLtLfn8QW+dWisaAw==",
+      "dev": true,
+      "dependencies": {
+        "@babel/runtime": "^7.21.0"
+      },
+      "engines": {
+        "node": ">=0.11"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/date-fns"
+      }
+    },
     "node_modules/debug": {
       "version": "4.3.4",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
@@ -4490,6 +4609,42 @@
         "node": ">=8.10.0"
       }
     },
+    "node_modules/engine.io": {
+      "version": "6.6.2",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.6.2.tgz",
+      "integrity": "sha512-gmNvsYi9C8iErnZdVcJnvCpSKbWTt1E8+JZo8b+daLninywUWi5NQ5STSHZ9rFjFO7imNcvb8Pc5pe/wMR5xEw==",
+      "dependencies": {
+        "@types/cookie": "^0.4.1",
+        "@types/cors": "^2.8.12",
+        "@types/node": ">=10.0.0",
+        "accepts": "~1.3.4",
+        "base64id": "2.0.0",
+        "cookie": "~0.7.2",
+        "cors": "~2.8.5",
+        "debug": "~4.3.1",
+        "engine.io-parser": "~5.2.1",
+        "ws": "~8.17.1"
+      },
+      "engines": {
+        "node": ">=10.2.0"
+      }
+    },
+    "node_modules/engine.io-parser": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.2.3.tgz",
+      "integrity": "sha512-HqD3yTBfnBxIrbnM1DoD6Pcq8NECnh8d4As1Qgh0z5Gg3jRRIqijury0CL3ghu/edArpUYiYqQiDUQBIs4np3Q==",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/engine.io/node_modules/cookie": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.7.2.tgz",
+      "integrity": "sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/entities": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/entities/-/entities-2.2.0.tgz",
@@ -5093,6 +5248,15 @@
       "integrity": "sha512-noqGuLw158+DuD9UPRKHpJ2hGxpFyDlYYrfM0mWt4XhT4n0lwzTLh70Tkdyy4kyTmyTT9Bv7bWAJqw7cgkEXDg==",
       "dev": true
     },
+    "node_modules/fn-args": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/fn-args/-/fn-args-5.0.0.tgz",
+      "integrity": "sha512-CtbfI3oFFc3nbdIoHycrfbrxiGgxXBXXuyOl49h47JawM1mYrqpiRqnH5CB2mBatdXvHHOUO6a+RiAuuvKt0lw==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/fn.name": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fn.name/-/fn.name-1.1.0.tgz",
@@ -5150,6 +5314,20 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/fs-extra": {
+      "version": "10.1.0",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-10.1.0.tgz",
+      "integrity": "sha512-oRXApq54ETRj4eMiFzGnHWGy+zo5raudjuxN0b8H7s/RU2oW0Wvsx9O0ACRN/kRq9E8Vu/ReskGB5o3ji+FzHQ==",
+      "dev": true,
+      "dependencies": {
+        "graceful-fs": "^4.2.0",
+        "jsonfile": "^6.0.1",
+        "universalify": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/fs-minipass": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-2.1.0.tgz",
@@ -6864,6 +7042,18 @@
         "node": ">=6"
       }
     },
+    "node_modules/jsonfile": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.1.0.tgz",
+      "integrity": "sha512-5dgndWOriYSm5cnYaJNhalLNDKOqFwyDB/rr1E9ZsGciGvKPs8R2xYGCacuf3z6K1YKDz182fd+fY3cn3pMqXQ==",
+      "dev": true,
+      "dependencies": {
+        "universalify": "^2.0.0"
+      },
+      "optionalDependencies": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
     "node_modules/jsonparse": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/jsonparse/-/jsonparse-1.2.0.tgz",
@@ -7721,6 +7911,39 @@
         "node": ">=8.6"
       }
     },
+    "node_modules/migrate-mongo": {
+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/migrate-mongo/-/migrate-mongo-11.0.0.tgz",
+      "integrity": "sha512-GB/gHzUwp/fL1w6ksNGihTyb+cSrm6NbVLlz1OSkQKaLlzAXMwH7iKK2ZS7W5v+I8vXiY2rL58WTUZSAL6QR+A==",
+      "dev": true,
+      "dependencies": {
+        "cli-table3": "^0.6.1",
+        "commander": "^9.1.0",
+        "date-fns": "^2.28.0",
+        "fn-args": "^5.0.0",
+        "fs-extra": "^10.0.1",
+        "lodash": "^4.17.21",
+        "p-each-series": "^2.2.0"
+      },
+      "bin": {
+        "migrate-mongo": "bin/migrate-mongo.js"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "peerDependencies": {
+        "mongodb": "^4.4.1 || ^5.0.0 || ^6.0.0"
+      }
+    },
+    "node_modules/migrate-mongo/node_modules/commander": {
+      "version": "9.5.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-9.5.0.tgz",
+      "integrity": "sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ==",
+      "dev": true,
+      "engines": {
+        "node": "^12.20.0 || >=14"
+      }
+    },
     "node_modules/mime": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
@@ -8305,6 +8528,18 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/p-each-series": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/p-each-series/-/p-each-series-2.2.0.tgz",
+      "integrity": "sha512-ycIL2+1V32th+8scbpTvyHNaHe02z0sjgh91XXjAk+ZeXoPN4Z46DVUnzdso0aX4KckKw0FNNFHdjZ2UsZvxiA==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/p-event": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/p-event/-/p-event-4.2.0.tgz",
@@ -9007,6 +9242,12 @@
         "node": ">=8.10.0"
       }
     },
+    "node_modules/regenerator-runtime": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.14.1.tgz",
+      "integrity": "sha512-dYnhHh0nJoMfnkZs6GmmhFknAGRrLznOu5nc9ML+EJxGvrx6H7teuevqVqCuPcPK//3eDrrjQhehXVx9cnkGdw==",
+      "dev": true
+    },
     "node_modules/request": {
       "version": "2.88.2",
       "resolved": "https://registry.npmjs.org/request/-/request-2.88.2.tgz",
@@ -9613,6 +9854,44 @@
         "npm": ">= 3.0.0"
       }
     },
+    "node_modules/socket.io": {
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/socket.io/-/socket.io-4.8.1.tgz",
+      "integrity": "sha512-oZ7iUCxph8WYRHHcjBEc9unw3adt5CmSNlppj/5Q4k2RIrhl8Z5yY2Xr4j9zj0+wzVZ0bxmYoGSzKJnRl6A4yg==",
+      "dependencies": {
+        "accepts": "~1.3.4",
+        "base64id": "~2.0.0",
+        "cors": "~2.8.5",
+        "debug": "~4.3.2",
+        "engine.io": "~6.6.0",
+        "socket.io-adapter": "~2.5.2",
+        "socket.io-parser": "~4.2.4"
+      },
+      "engines": {
+        "node": ">=10.2.0"
+      }
+    },
+    "node_modules/socket.io-adapter": {
+      "version": "2.5.5",
+      "resolved": "https://registry.npmjs.org/socket.io-adapter/-/socket.io-adapter-2.5.5.tgz",
+      "integrity": "sha512-eLDQas5dzPgOWCk9GuuJC2lBqItuhKI4uxGgo9aIV7MYbk2h9Q6uULEh8WBzThoI7l+qU9Ast9fVUmkqPP9wYg==",
+      "dependencies": {
+        "debug": "~4.3.4",
+        "ws": "~8.17.1"
+      }
+    },
+    "node_modules/socket.io-parser": {
+      "version": "4.2.4",
+      "resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-4.2.4.tgz",
+      "integrity": "sha512-/GbIKmo8ioc+NIWIhwdecY0ge+qVBSMdgxGygevmdHj24bsfgtCmcUUcQ5ZzcylGFHsN3k4HB4Cgkl96KVnuew==",
+      "dependencies": {
+        "@socket.io/component-emitter": "~3.1.0",
+        "debug": "~4.3.1"
+      },
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
     "node_modules/socks": {
       "version": "2.7.3",
       "resolved": "https://registry.npmjs.org/socks/-/socks-2.7.3.tgz",
@@ -10330,6 +10609,15 @@
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
       "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
     },
+    "node_modules/universalify": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.1.tgz",
+      "integrity": "sha512-gptHNQghINnc/vTGIk0SOFGFNXw7JVrlRUtConJRlvaw6DuX0wO5Jeko9sWrMBhh+PsYAZ7oXAiOnf/UKogyiw==",
+      "dev": true,
+      "engines": {
+        "node": ">= 10.0.0"
+      }
+    },
     "node_modules/unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
@@ -10815,6 +11103,26 @@
         "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
       }
     },
+    "node_modules/ws": {
+      "version": "8.17.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.1.tgz",
+      "integrity": "sha512-6XQFvXTkbfUOZOKKILFG1PDK2NDQs4azKQl26T0YS5CxqWLgXajbPZ+h4gZekJyRqFU8pvnbAbbs/3TgRPy+GQ==",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/xml": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/xml/-/xml-1.0.1.tgz",
diff --git a/package.json b/package.json
index 588a4e36..dcd054a8 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "jest": "^28.1.3",
     "jest-sonar-reporter": "^2.0.0",
     "lint-staged": "^13.0.2",
+    "migrate-mongo": "^11.0.0",
     "nodemon": "^2.0.15",
     "prettier": "2.5.1",
     "supertest": "^6.2.4"
diff --git a/sonar-project.properties b/sonar-project.properties
index 6b55c105..e82b52e1 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -8,7 +8,7 @@ sonar.projectVersion=1.0
 # Path is relative to the sonar-project.properties file. Replace "\" by "/" on Windows.
 
 sonar.sources=.
-sonar.exclusions=**/src/test/**/*.js, node_modules/**, jest.config.js, swagger-settings.js, docs/**, src/emails/**
+sonar.exclusions=**/src/test/**/*.js, node_modules/**, jest.config.js, swagger-settings.js, docs/**, src/emails/**, migrate-mongo-config.js
 sonar.language=js
 
 
diff --git a/src/models/cooperation.js b/src/models/cooperation.js
index f6834f10..c1e5a86a 100644
--- a/src/models/cooperation.js
+++ b/src/models/cooperation.js
@@ -7,14 +7,15 @@ const {
   FIELD_MUST_BE_SELECTED,
   VALUE_MUST_BE_ABOVE
 } = require('~/consts/errors')
-const { USER, OFFER, COOPERATION, FINISHED_QUIZ, QUIZ } = require('~/consts/models')
+const { USER, OFFER, COOPERATION, FINISHED_QUIZ, QUIZ, SUBJECT, CATEGORY } = require('~/consts/models')
 const {
   enums: {
     COOPERATION_STATUS_ENUM,
     PROFICIENCY_LEVEL_ENUM,
     MAIN_ROLE_ENUM,
     RESOURCES_TYPES_ENUM,
-    RESOURCE_AVAILABILITY_STATUS_ENUM
+    RESOURCE_AVAILABILITY_STATUS_ENUM,
+    SPOKEN_LANG_ENUM
   }
 } = require('~/consts/validation')
 const { REQUESTED, UPDATED } = require('~/consts/notificationTypes')
@@ -66,7 +67,7 @@ const cooperationSchema = new Schema(
       maxLength: [1000, FIELD_CANNOT_BE_LONGER('additional info', 1000)]
     },
     proficiencyLevel: {
-      type: String,
+      type: [String],
       enum: {
         values: PROFICIENCY_LEVEL_ENUM,
         message: ENUM_CAN_BE_ONE_OF('proficiency level', PROFICIENCY_LEVEL_ENUM)
@@ -102,6 +103,30 @@ const cooperationSchema = new Schema(
       type: [Schema.Types.ObjectId],
       ref: FINISHED_QUIZ
     },
+    subject: {
+      type: Schema.Types.ObjectId,
+      ref: SUBJECT,
+      required: true
+    },
+    category: {
+      type: Schema.Types.ObjectId,
+      ref: CATEGORY,
+      required: true
+    },
+    description: {
+      type: String,
+      minLength: [1, FIELD_CANNOT_BE_SHORTER('description', 1)],
+      maxLength: [1000, FIELD_CANNOT_BE_LONGER('description', 1000)],
+      required: [true, FIELD_CANNOT_BE_EMPTY('description')]
+    },
+    languages: {
+      type: [String],
+      enum: {
+        values: SPOKEN_LANG_ENUM,
+        message: ENUM_CAN_BE_ONE_OF('language', SPOKEN_LANG_ENUM)
+      },
+      required: [true, FIELD_MUST_BE_SELECTED('language(s)')]
+    },
     sections: [
       {
         title: {
diff --git a/src/services/cooperation.js b/src/services/cooperation.js
index 26219301..f1bc98d9 100644
--- a/src/services/cooperation.js
+++ b/src/services/cooperation.js
@@ -16,23 +16,23 @@ const cooperationService = {
       await Cooperation.findById(id)
     ).populate([
       { path: 'sections.resources.resource', select: '-createdAt -updatedAt' },
+      {
+        path: 'category',
+        select: ['name', 'appearance']
+      },
+      {
+        path: 'subject',
+        select: 'name'
+      },
       {
         path: 'offer',
         populate: [
-          {
-            path: 'category',
-            select: ['name', 'appearance']
-          },
-          {
-            path: 'subject',
-            select: 'name'
-          },
           {
             path: 'author',
             select: ['firstName', 'lastName', 'photo', 'professionalSummary', 'totalReviews', 'FAQ', 'averageRating']
           }
         ],
-        select: ['id', 'author', 'category', 'subject', 'title', 'languages', 'proficiencyLevel', 'description']
+        select: ['id', 'author']
       },
       {
         path: 'initiator'
@@ -44,7 +44,20 @@ const cooperationService = {
   },
 
   createCooperation: async (initiator, initiatorRole, data) => {
-    const { offer, proficiencyLevel, additionalInfo, receiver, receiverRole, price, title, sections } = data
+    const {
+      offer,
+      proficiencyLevel,
+      additionalInfo,
+      receiver,
+      receiverRole,
+      price,
+      title,
+      sections,
+      subject,
+      category,
+      description,
+      languages
+    } = data
 
     return await Cooperation.create({
       initiator,
@@ -57,6 +70,10 @@ const cooperationService = {
       price,
       proficiencyLevel,
       additionalInfo,
+      subject,
+      category,
+      description,
+      languages,
       needAction: receiverRole
     })
   },
diff --git a/src/test/integration/controllers/cooperation.spec.js b/src/test/integration/controllers/cooperation.spec.js
index 6c27263b..efa18596 100644
--- a/src/test/integration/controllers/cooperation.spec.js
+++ b/src/test/integration/controllers/cooperation.spec.js
@@ -10,6 +10,7 @@ const { serverCleanup, serverInit, stopServer } = require('~/test/setup')
 const { expectError } = require('~/test/helpers')
 const testUserAuthentication = require('~/utils/testUserAuth')
 const TokenService = require('~/services/token')
+const { testCooperationData } = require('~/test/test-constants')
 
 const { DOCUMENT_NOT_FOUND, UNAUTHORIZED, VALIDATION_ERROR, FORBIDDEN } = require('~/consts/errors')
 const {
@@ -54,34 +55,6 @@ const anotherUserData = {
   lastLogin: new Date().toJSON()
 }
 
-const testCooperationData = {
-  price: 99,
-  receiverRole: 'tutor',
-  proficiencyLevel: 'Beginner',
-  title: 'First-class teacher. Director of the Hogwarts school of magic',
-  sections: [
-    {
-      title: 'Solving Quadratic Equations Using the Quadratic Formula',
-      description: 'Solving Quadratic Equations Using the Quadratic Formula',
-      resources: [
-        {
-          resource: {
-            _id: '6684179479e5232bce4579fa',
-            author: '6658f73f93885febb491e08b',
-            content: '<p><strong>Solving Quadratic Equations Using the Quadratic Formula</strong></p>',
-            description: 'The quadratic formula',
-            title: 'Solving Quadratic Equations Using the Quadratic Formula',
-            category: '6684175179e5232bce4579ed',
-            resourceType: RESOURCES_TYPES_ENUM[0]
-          },
-          resourceType: RESOURCES_TYPES_ENUM[0],
-          availability: { status: 'open', date: null }
-        }
-      ]
-    }
-  ]
-}
-
 const testOfferData = {
   authorRole: 'tutor',
   price: 99,
@@ -216,6 +189,8 @@ describe('Cooperation controller', () => {
 
     const updatedTestCooperationData = {
       ...testCooperationData,
+      subject: subject._id,
+      category: category._id,
       sections: [
         {
           ...testCooperationData.sections[0],
@@ -268,9 +243,7 @@ describe('Cooperation controller', () => {
       expect(Array.isArray(response.body.items)).toBe(true)
       expect(response.body.items[0]).toMatchObject({
         _id: testCooperation._body._id,
-        offer: {
-          _id: testOffer._id
-        },
+        offer: testOffer._id,
         initiator: testStudentUser.id,
         receiver: testTutorUser._id,
         proficiencyLevel: testCooperationData.proficiencyLevel,
diff --git a/src/test/integration/controllers/coursesCooperations.spec.js b/src/test/integration/controllers/coursesCooperations.spec.js
index 059e256e..839a38bf 100644
--- a/src/test/integration/controllers/coursesCooperations.spec.js
+++ b/src/test/integration/controllers/coursesCooperations.spec.js
@@ -1,5 +1,6 @@
 const { serverCleanup, serverInit, stopServer } = require('~/test/setup')
 const { createUser, getCategory } = require('~/test/test-utils')
+const { testCooperationData } = require('~/test/test-constants')
 const subjectService = require('~/services/subject')
 const Cooperation = require('~/models/cooperation')
 const {
@@ -62,25 +63,14 @@ const testOffer = {
   }
 }
 
-const testCooperation = {
-  offer: 'offerId',
-  initiatorRole: 'student',
-  receiver: 'tutorId',
-  receiverRole: 'tutor',
-  title: 'Cooperation title',
-  proficiencyLevel: 'Beginner',
-  price: 500,
-  status: 'active',
-  availableQuizzes: [],
-  finishedQuizzes: [],
-  sections: [
-    {
-      title: 'Section 1',
-      description: 'description',
-      resources: []
-    }
-  ]
-}
+const testCooperation = { ...testCooperationData }
+testCooperation.sections = [
+  {
+    title: 'Section 1',
+    description: 'description',
+    resources: []
+  }
+]
 
 describe('User controller', () => {
   let app, server, accessToken, userId, testLessonResponse, testLessonId, category, categoryId, testSubject, offerId
@@ -122,6 +112,8 @@ describe('User controller', () => {
 
     testCooperation.receiver = userId
     testCooperation.offer = offerId
+    testCooperation.subject = testSubject._id
+    testCooperation.category = categoryId
   })
 
   afterEach(async () => {
diff --git a/src/test/integration/controllers/note.spec.js b/src/test/integration/controllers/note.spec.js
index 8038430a..e19c3dc6 100644
--- a/src/test/integration/controllers/note.spec.js
+++ b/src/test/integration/controllers/note.spec.js
@@ -3,9 +3,13 @@ const { expectError } = require('~/test/helpers')
 const { UNAUTHORIZED, FORBIDDEN, DOCUMENT_NOT_FOUND } = require('~/consts/errors')
 const testUserAuthentication = require('~/utils/testUserAuth')
 const TokenService = require('~/services/token')
+const subjectService = require('~/services/subject')
+const { getCategory } = require('~/test/test-utils')
+const { testCooperationData } = require('~/test/test-constants')
 
 const Cooperation = require('~/models/cooperation')
 const Note = require('~/models/note')
+const User = require('~/models/user')
 
 const endpointUrl = (id = ':id', noteId = '') => `/cooperations/${id}/notes/${noteId}`
 
@@ -13,19 +17,6 @@ const nonExistingCooperationId = '19cf23e07281224fbbee3241'
 
 const mockedInitiatorId = '649c1fc9c75d3e44440e3a15'
 
-const testCooperationData = {
-  price: 99,
-  receiverRole: 'tutor',
-  proficiencyLevel: 'Beginner',
-  additionalInfo:
-    "I don't like both Dark Arts and Voldemort that's why i want to learn your subject and became your student",
-  receiver: '649c147ac75d3e44440e3a12',
-  offer: '649c148cc75d3e44440e3a13',
-  title: 'First class teacher. Director of the Hogwarts school witchcraft and wizardry.',
-  initiatorRole: 'student',
-  needAction: 'tutor'
-}
-
 const testNoteData = {
   text: 'my comment',
   isPrivate: false
@@ -36,18 +27,67 @@ const updateNoteData = {
   isPrivate: true
 }
 
+const subjectBody = { name: 'English' }
+
+const testOffer = {
+  price: 330,
+  proficiencyLevel: ['Beginner'],
+  title: 'Test Title',
+  author: '',
+  authorRole: 'tutor',
+  FAQ: [{ question: 'question1', answer: 'answer1' }],
+  description: 'description',
+  languages: ['Ukrainian'],
+  enrolledUsers: [],
+  subject: '',
+  category: {
+    _id: '',
+    appearance: { icon: 'mocked-path-to-icon', color: '#66C42C' }
+  }
+}
+
+const tutorUserData = {
+  role: ['tutor'],
+  firstName: 'albus',
+  lastName: 'dumbledore',
+  email: 'lovemagic@gmail.com',
+  password: 'supermagicpass123',
+  appLanguage: 'en',
+  isEmailConfirmed: true,
+  lastLogin: new Date().toJSON()
+}
+
 describe('Note controller', () => {
-  let app, server, accessToken, testUser, testCooperation, testNote
+  let app, server, accessToken, testUser, testCooperation, testNote, category, testSubject
 
   beforeAll(async () => {
-    ; ({ app, server } = await serverInit())
+    ;({ app, server } = await serverInit())
   })
 
   beforeEach(async () => {
     accessToken = await testUserAuthentication(app)
+    const testTutorUser = await User.create(tutorUserData)
 
     testUser = TokenService.validateAccessToken(accessToken)
 
+    category = await getCategory()
+
+    subjectBody.category = category._id
+    testSubject = await subjectService.addSubject(subjectBody)
+
+    testOffer.category = category._id
+    testOffer.subject = testSubject._id
+    const testOfferResponse = await app
+      .post('/offers/')
+      .set('Cookie', [`accessToken=${accessToken}`])
+      .send(testOffer)
+    const offerId = testOfferResponse.body._id
+
+    testCooperationData.category = category._id
+    testCooperationData.subject = testSubject._id
+    testCooperationData.offer = offerId
+    testCooperationData.receiver = testTutorUser._id
+
     testCooperation = await Cooperation.create({
       initiator: testUser.id,
       ...testCooperationData
diff --git a/src/test/migrations/20241106160527-add-fields-to-cooperations.spec.js b/src/test/migrations/20241106160527-add-fields-to-cooperations.spec.js
new file mode 100644
index 00000000..531b8a67
--- /dev/null
+++ b/src/test/migrations/20241106160527-add-fields-to-cooperations.spec.js
@@ -0,0 +1,89 @@
+const { MongoClient } = require('mongodb')
+
+const { up, down } = require('@root/migrations/20241106160527-add-fields-to-cooperations.js')
+
+require('~/initialization/envSetup')
+const {
+  config: { MONGODB_URL }
+} = require('~/configs/config')
+const {
+  testCategoryData,
+  testSubjectData,
+  collectionNames: { SUBJECTS, CATEGORIES, OFFERS, COOPERATIONS }
+} = require('~/test/test-constants')
+
+const url = MONGODB_URL.slice(0, MONGODB_URL.lastIndexOf('/'))
+const databaseName = MONGODB_URL.slice(MONGODB_URL.lastIndexOf('/') + 1)
+
+const testOfferData = {
+  subject: 'subjectId',
+  category: 'categoryId',
+  description: 'Offer description',
+  languages: ['English'],
+  proficiencyLevel: ['Beginner']
+}
+
+const testCooperationData = {
+  title: 'Cooperation title',
+  proficiencyLevel: 'Beginner'
+}
+
+describe('20241106160527-add-fields-to-cooperations:', () => {
+  let client, database, testSubjectId, testCategoryId, testCooperationId
+
+  beforeAll(() => {
+    client = new MongoClient(url)
+    database = client.db(databaseName)
+  })
+
+  beforeEach(async () => {
+    const testCategory = await database.collection(CATEGORIES).insertOne(testCategoryData)
+    testCategoryId = testCategory.insertedId
+
+    const testSubjectDataCopy = { ...testSubjectData, category: testCategory.insertedId }
+    const testSubject = await database.collection(SUBJECTS).insertOne(testSubjectDataCopy)
+    testSubjectId = testSubject.insertedId
+
+    testOfferData.subject = testSubject.insertedId
+    testOfferData.category = testCategory.insertedId
+    const testOffer = await database.collection(OFFERS).insertOne(testOfferData)
+
+    const testCooperation = await database
+      .collection(COOPERATIONS)
+      .insertOne({ ...testCooperationData, offer: testOffer.insertedId })
+    testCooperationId = testCooperation.insertedId
+  })
+
+  afterEach(async () => {
+    await database.dropDatabase()
+  })
+
+  afterAll(async () => {
+    await client.close()
+  })
+
+  it('should migrate up', async () => {
+    await up(database)
+
+    const cooperationData = await database.collection(COOPERATIONS).findOne({ _id: testCooperationId })
+
+    expect(cooperationData.category.toString()).toBe(testCategoryId.toString())
+    expect(cooperationData.subject.toString()).toBe(testSubjectId.toString())
+    expect(cooperationData.proficiencyLevel).toEqual(expect.arrayContaining(testOfferData.proficiencyLevel))
+    expect(cooperationData.description).toBe(testOfferData.description)
+    expect(cooperationData.languages).toEqual(expect.arrayContaining(testOfferData.languages))
+  })
+
+  it('should migrate down', async () => {
+    await up(database)
+    await down(database)
+
+    const cooperationData = await database.collection(COOPERATIONS).findOne({ _id: testCooperationId })
+
+    expect(cooperationData.category).toBeUndefined()
+    expect(cooperationData.subject).toBeUndefined()
+    expect(cooperationData.proficiencyLevel).toEqual(testOfferData.proficiencyLevel[0])
+    expect(cooperationData.description).toBeUndefined()
+    expect(cooperationData.languages).toBeUndefined()
+  })
+})
diff --git a/src/test/test-constants.js b/src/test/test-constants.js
new file mode 100644
index 00000000..2b722ae0
--- /dev/null
+++ b/src/test/test-constants.js
@@ -0,0 +1,53 @@
+const {
+  enums: { RESOURCES_TYPES_ENUM }
+} = require('~/consts/validation')
+
+const collectionNames = {
+  SUBJECTS: 'subjects',
+  CATEGORIES: 'categories',
+  OFFERS: 'offers',
+  COOPERATIONS: 'cooperation'
+}
+
+const testCategoryData = {
+  name: 'IT',
+  appearance: {
+    icon: 'AccountTreeRoundedIcon',
+    color: '#47B8B8'
+  }
+}
+
+const testCooperationData = {
+  price: 400,
+  receiverRole: 'tutor',
+  proficiencyLevel: ['Beginner'],
+  title: 'Test cooperation title',
+  description: 'Some description...',
+  languages: ['English'],
+  needAction: 'tutor',
+  sections: [
+    {
+      title: 'Section 1',
+      description: 'Section 1 description',
+      resources: [
+        {
+          resource: {
+            _id: '6684179479e5232bce4579fa',
+            author: '6658f73f93885febb491e08b',
+            content: '<p><strong>Solving Quadratic Equations Using the Quadratic Formula</strong></p>',
+            description: 'The quadratic formula',
+            title: 'Solving Quadratic Equations Using the Quadratic Formula',
+            category: '6684175179e5232bce4579ed',
+            resourceType: RESOURCES_TYPES_ENUM[0]
+          },
+          resourceType: RESOURCES_TYPES_ENUM[0],
+          availability: { status: 'open', date: null }
+        }
+      ]
+    }
+  ]
+}
+
+const testSubjectData = { name: 'Web Development' }
+
+module.exports = { testCategoryData, testSubjectData, testCooperationData, collectionNames }
diff --git a/src/utils/cooperations/coopsAggregateOptions.js b/src/utils/cooperations/coopsAggregateOptions.js
index 4eacc4a0..b4523dbb 100644
--- a/src/utils/cooperations/coopsAggregateOptions.js
+++ b/src/utils/cooperations/coopsAggregateOptions.js
@@ -65,43 +65,41 @@ const coopsAggregateOptions = (query, params = {}) => {
     },
     {
       $lookup: {
-        from: 'offers',
-        localField: 'offer',
+        from: 'subjects',
+        localField: 'subject',
         foreignField: '_id',
         pipeline: [
-          { $project: { title: 1, subject: 1, category: 1, price: 1 } },
           {
-            $lookup: {
-              from: 'subjects',
-              let: { subjectId: '$subject' },
-              pipeline: [{ $match: { $expr: { $eq: ['$_id', '$$subjectId'] } } }, { $project: { name: 1 } }],
-              as: 'subject'
-            }
-          },
-          {
-            $lookup: {
-              from: 'categories',
-              let: { categoryId: '$category' },
-              pipeline: [{ $match: { $expr: { $eq: ['$_id', '$$categoryId'] } } }, { $project: { appearance: 1 } }],
-              as: 'category'
+            $project: {
+              name: 1
             }
-          },
-          { $unwind: '$subject' },
-          { $unwind: '$category' }
+          }
         ],
-        as: 'offer'
+        as: 'subject'
       }
     },
     {
-      $unwind: {
-        path: '$user'
+      $lookup: {
+        from: 'categories',
+        localField: 'category',
+        foreignField: '_id',
+        pipeline: [
+          {
+            $project: {
+              appearance: 1
+            }
+          }
+        ],
+        as: 'category'
       }
     },
     {
       $unwind: {
-        path: '$offer'
+        path: '$user'
       }
     },
+    { $unwind: '$category' },
+    { $unwind: '$subject' },
     {
       $unset: 'sections'
     },