diff --git a/lemarche/siaes/admin.py b/lemarche/siaes/admin.py
index 5375f13d2..20a55ccab 100644
--- a/lemarche/siaes/admin.py
+++ b/lemarche/siaes/admin.py
@@ -740,7 +740,7 @@ class SiaeActivityAdmin(admin.ModelAdmin):
     search_fields = ["id", "siae__id", "siae__name"]
     search_help_text = "Cherche sur les champs : ID, Structure (ID, Nom)"
 
-    autocomplete_fields = ["siae", "sectors", "location"]
+    autocomplete_fields = ["siae", "sectors", "locations"]
     readonly_fields = ["created_at", "updated_at"]
 
     fieldsets = (
@@ -759,7 +759,7 @@ class SiaeActivityAdmin(admin.ModelAdmin):
         (
             "Localisation et périmètre d'intervention",
             {
-                "fields": ("location", "geo_range", "geo_range_custom_distance"),
+                "fields": ("locations", "geo_range", "geo_range_custom_distance"),
             },
         ),
         ("Dates", {"fields": ("created_at", "updated_at")}),
diff --git a/lemarche/siaes/constants.py b/lemarche/siaes/constants.py
index c6a2c0f92..cb3bd4deb 100644
--- a/lemarche/siaes/constants.py
+++ b/lemarche/siaes/constants.py
@@ -80,6 +80,7 @@
 GEO_RANGE_REGION = "REGION"
 GEO_RANGE_CUSTOM = "CUSTOM"
 GEO_RANGE_COUNTRY = "COUNTRY"
+GEO_RANGE_ZONES = "ZONES"
 
 GEO_RANGE_CHOICES = (
     (GEO_RANGE_COUNTRY, "France entière"),
@@ -88,6 +89,12 @@
     (GEO_RANGE_CUSTOM, "Distance en kilomètres"),
 )
 
+ACTIVITIES_GEO_RANGE_CHOICES = (
+    (GEO_RANGE_COUNTRY, "France entière"),
+    (GEO_RANGE_CUSTOM, "Distance en kilomètres"),
+    (GEO_RANGE_ZONES, "Zone(s) d'intervention personnalisée(s)"),
+)
+
 SOURCE_ASP = "ASP"
 SOURCE_GEIQ = "GEIQ"
 SOURCE_EA_EATT = "EA_EATT"
diff --git a/lemarche/siaes/factories.py b/lemarche/siaes/factories.py
index 46d19cc55..3e750f316 100644
--- a/lemarche/siaes/factories.py
+++ b/lemarche/siaes/factories.py
@@ -3,6 +3,7 @@
 import factory.fuzzy
 from factory.django import DjangoModelFactory
 
+from lemarche.sectors.factories import SectorGroupFactory
 from lemarche.siaes import constants as siae_constants
 from lemarche.siaes.models import (
     Siae,
@@ -69,13 +70,28 @@ class SiaeActivityFactory(DjangoModelFactory):
     class Meta:
         model = SiaeActivity
 
-    presta_type = factory.List([factory.fuzzy.FuzzyChoice([key for (key, value) in siae_constants.PRESTA_CHOICES])])
+    class Params:
+        with_country_perimeter = factory.Trait(geo_range=siae_constants.GEO_RANGE_COUNTRY)
+        with_custom_distance_perimeter = factory.Trait(
+            geo_range=siae_constants.GEO_RANGE_CUSTOM,
+            geo_range_custom_distance=factory.fuzzy.FuzzyInteger(1, 100),
+        )
+        with_zones_perimeter = factory.Trait(geo_range=siae_constants.GEO_RANGE_ZONES)
+
+    sector_group = factory.SubFactory(SectorGroupFactory)
+
+    presta_type = factory.List([factory.fuzzy.FuzzyChoice([key for (key, _) in siae_constants.PRESTA_CHOICES])])
 
     @factory.post_generation
     def sectors(self, create, extracted, **kwargs):
         if extracted:
             self.sectors.add(*extracted)
 
+    @factory.post_generation
+    def locations(self, create, extracted, **kwargs):
+        if extracted:
+            self.locations.add(*extracted)
+
 
 class SiaeOfferFactory(DjangoModelFactory):
     class Meta:
diff --git a/lemarche/siaes/migrations/0077_remove_siaeactivity_location_siaeactivity_locations_and_more.py b/lemarche/siaes/migrations/0077_remove_siaeactivity_location_siaeactivity_locations_and_more.py
new file mode 100644
index 000000000..10dfe9291
--- /dev/null
+++ b/lemarche/siaes/migrations/0077_remove_siaeactivity_location_siaeactivity_locations_and_more.py
@@ -0,0 +1,39 @@
+# Generated by Django 4.2.15 on 2024-10-07 14:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("perimeters", "0005_alter_perimeter_post_codes"),
+        ("siaes", "0076_siaeactivity"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="siaeactivity",
+            name="location",
+        ),
+        migrations.AddField(
+            model_name="siaeactivity",
+            name="locations",
+            field=models.ManyToManyField(
+                blank=True, related_name="siae_activities", to="perimeters.perimeter", verbose_name="Localisations"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="siaeactivity",
+            name="geo_range",
+            field=models.CharField(
+                blank=True,
+                choices=[
+                    ("COUNTRY", "France entière"),
+                    ("CUSTOM", "Distance en kilomètres"),
+                    ("ZONES", "Zone(s) d'intervention personnalisée(s)"),
+                ],
+                db_index=True,
+                max_length=20,
+                verbose_name="Périmètre d'intervention",
+            ),
+        ),
+    ]
diff --git a/lemarche/siaes/models.py b/lemarche/siaes/models.py
index 83d8c8230..d319bd6ce 100644
--- a/lemarche/siaes/models.py
+++ b/lemarche/siaes/models.py
@@ -1428,25 +1428,19 @@ class SiaeActivity(models.Model):
         null=True,
         db_index=True,
     )
-    location: Perimeter = models.ForeignKey(
-        to="perimeters.Perimeter",
-        verbose_name="Localisation",
-        related_name="siae_activities",
-        on_delete=models.DO_NOTHING,
-        blank=True,
-        null=True,
+    locations = models.ManyToManyField(
+        "perimeters.Perimeter", verbose_name="Localisations", related_name="siae_activities", blank=True
     )
     geo_range = models.CharField(
         verbose_name="Périmètre d'intervention",
         max_length=20,
-        choices=siae_constants.GEO_RANGE_CHOICES,
+        choices=siae_constants.ACTIVITIES_GEO_RANGE_CHOICES,
         blank=True,
         db_index=True,
     )
     geo_range_custom_distance = models.IntegerField(
         verbose_name="Distance en kilomètres (périmètre d'intervention)", blank=True, null=True
     )
-
     created_at = models.DateTimeField(verbose_name="Date de création", default=timezone.now)
     updated_at = models.DateTimeField(verbose_name="Date de modification", auto_now=True)
 
@@ -1463,28 +1457,13 @@ def presta_type_display(self) -> str:
     def geo_range_pretty_display(self):
         if self.geo_range == siae_constants.GEO_RANGE_COUNTRY:
             return self.get_geo_range_display()
-        elif self.geo_range == siae_constants.GEO_RANGE_REGION:
-            return f"{self.get_geo_range_display().lower()} ({self.siae.region})"
-        elif self.geo_range == siae_constants.GEO_RANGE_DEPARTMENT:
-            return f"{self.get_geo_range_display().lower()} ({self.siae.department})"
+        elif self.geo_range == siae_constants.GEO_RANGE_ZONES:
+            return f"{self.get_geo_range_display()} : {', '.join(self.locations.values_list('name', flat=True))}"
         elif self.geo_range == siae_constants.GEO_RANGE_CUSTOM:
             if self.geo_range_custom_distance:
-                return f"{self.geo_range_custom_distance} km"
+                return f"{self.geo_range_custom_distance} km de {self.siae.city}"
         return "non disponible"
 
-    @property
-    def geo_range_pretty_title(self):
-        if self.geo_range == siae_constants.GEO_RANGE_COUNTRY:
-            return self.geo_range_pretty_display
-        elif self.geo_range == siae_constants.GEO_RANGE_REGION:
-            return self.siae.region
-        elif self.geo_range == siae_constants.GEO_RANGE_DEPARTMENT:
-            return self.siae.get_department_display()
-        elif self.geo_range == siae_constants.GEO_RANGE_CUSTOM:
-            if self.geo_range_custom_distance:
-                return f"{self.geo_range_pretty_display} de {self.siae.city}"
-        return self.geo_range_pretty_display
-
 
 class SiaeOffer(models.Model):
     name = models.CharField(verbose_name="Nom", max_length=255)
diff --git a/lemarche/static/js/siae_activity_delete.js b/lemarche/static/js/siae_activity_delete.js
index 17b546ee0..672ec0147 100644
--- a/lemarche/static/js/siae_activity_delete.js
+++ b/lemarche/static/js/siae_activity_delete.js
@@ -1,11 +1,9 @@
 document.addEventListener('alpine:init', function () {
     Alpine.data('activityItem', () => ({
-        siaeSlug: null,
         siaeActivityId: null,
         siaeActivityNameDisplay: null,
 
-        initOptions(siaeSlug, siaeActivityId, siaeActivityNameDisplay) {
-            this.siaeSlug = siaeSlug;
+        initOptions(siaeActivityId, siaeActivityNameDisplay) {
             this.siaeActivityId = siaeActivityId;
             this.siaeActivityNameDisplay = siaeActivityNameDisplay;
         },
@@ -20,13 +18,8 @@ document.addEventListener('alpine:init', function () {
             if (modal.querySelector('#siae-activity-name-display')) {
                 modal.querySelector('#siae-activity-name-display').textContent = this.siaeActivityNameDisplay;
             }
-
-            let formActionUrl = new URL(modalForm.getAttribute('data-action'));
-            formActionUrl.pathname = formActionUrl.pathname
-                .replace('siae-slug-to-replace', encodeURIComponent(this.siaeSlug))
-                .replace('siae-activity-id-to-replace', encodeURIComponent(this.siaeActivityId));
-
-            modalForm.setAttribute('action', formActionUrl.toString());
+            let formActionUrl = escapeHtml(modalForm.getAttribute('data-action'));
+            modalForm.setAttribute('action', formActionUrl.replace('siae-activity-id-to-replace', this.siaeActivityId.replace(/\D/g, '')));
 
             const modalDialog = document.getElementById(modalID);
             dsfr(modalDialog).modal.disclose();
diff --git a/lemarche/static/js/utils.js b/lemarche/static/js/utils.js
index a1a89f8d6..67b070422 100644
--- a/lemarche/static/js/utils.js
+++ b/lemarche/static/js/utils.js
@@ -29,7 +29,7 @@ window.addEventListener('DOMContentLoaded', function () {
     initSuperBadges();
 
     // some elements have their url in data-url attribute
-    $(document).on("click", ".with-data-url", function(e) {
+    $(document).on("click", ".with-data-url", function (e) {
         window.location.href = $(this).data("url");
     });
 });
@@ -57,13 +57,6 @@ let toggleInputElement = (toggle, element, required = undefined) => {
     }
 }
 
-const initModalMessages = () => {
-    var elements = document.getElementsByClassName('modal-message-alert');
-    for (var i = 0; i < elements.length; i++) {
-        OpenBootstrapModal(elements[i]);
-    }
-}
-
 const initSuperBadges = () => {
     $('.super-badge-badge').each(function (element) {
         $(this).tooltip(
@@ -103,8 +96,11 @@ const initSuperBadges = () => {
     })
 }
 
-function OpenBootstrapModal(elmt) {
-    setTimeout(function () {
-        $(elmt).modal('show');
-    }, 1000);
-}
+function escapeHtml(unsafe) {
+    return unsafe
+        .replace(/&/g, "&amp;")
+        .replace(/</g, "&lt;")
+        .replace(/>/g, "&gt;")
+        .replace(/"/g, "&quot;")
+        .replace(/'/g, "&#039;");
+}
\ No newline at end of file
diff --git a/lemarche/templates/dashboard/_siae_activity_delete_modal.html b/lemarche/templates/dashboard/_siae_activity_delete_modal.html
index 301df3e10..6824793c5 100644
--- a/lemarche/templates/dashboard/_siae_activity_delete_modal.html
+++ b/lemarche/templates/dashboard/_siae_activity_delete_modal.html
@@ -22,7 +22,7 @@ <h3 id="siae_activity_delete_modal_title" class="fr-modal__title">Supprimer</h3>
                     <div class="fr-modal__footer">
                         <div class="fr-btns-group fr-btns-group--right fr-btns-group--inline-reverse fr-btns-group--inline-lg">
                             <form method="post"
-                                  data-action="{% url 'dashboard_siaes:siae_edit_activities_delete' siae.slug|default:'siae-slug-to-replace' activity.id|default:'siae-activity-id-to-replace' %}">
+                                  data-action="{% url 'dashboard_siaes:siae_edit_activities_delete' siae.slug 'siae-activity-id-to-replace' %}">
                                 {% csrf_token %}
                                 <button class="fr-btn fr-btn--icon-left" type="submit">Confirmer</button>
                             </form>
diff --git a/lemarche/templates/dashboard/siae_edit_activities_create.html b/lemarche/templates/dashboard/siae_edit_activities_create.html
index 91ee87800..7f3c74557 100644
--- a/lemarche/templates/dashboard/siae_edit_activities_create.html
+++ b/lemarche/templates/dashboard/siae_edit_activities_create.html
@@ -10,7 +10,7 @@
     <div class="fr-container">
         <div class="fr-grid-row">
             <div class="fr-col-12">
-                <form method="POST" action="">
+                <form method="post" action="">
                     {% csrf_token %}
                     {% if form.non_field_errors %}
                         <section class="fr-my-4v fr-input-group fr-input-group--error">
@@ -54,7 +54,11 @@ <h3 class="fr-callout__title fr-text--sm">
                     <div class="fr-grid-row fr-grid-row--gutters">
                         <div class="fr-col-12 fr-col-lg-8">
                             {% dsfr_form_field form.geo_range %}
-                            {% dsfr_form_field form.geo_range_custom_distance %}
+                            <div id="geo_range_custom_distance_wrapper">{% dsfr_form_field form.geo_range_custom_distance %}</div>
+                            <div id="geo_range_locations_wrapper" class="fr-input-group">
+                                {{ form.locations }}
+                                {{ current_locations|json_script:"current-locations" }}
+                            </div>
                         </div>
                         <div class="fr-col-12 fr-col-lg-4">
                             <div class="fr-callout fr-p-4v">
@@ -67,7 +71,7 @@ <h3 class="fr-callout__title fr-text--sm">
                             </div>
                         </div>
                     </div>
-                    <div class="fr-grid-row fr-grid-row--gutters fr-mt-3v fr-mt-lg-5v">
+                    <div class="fr-grid-row fr-grid-row--gutters fr-my-3v fr-my-lg-5v">
                         <div class="fr-col-12 fr-col-lg-8">
                             <ul class="fr-mt-2v fr-btns-group fr-btns-group--right fr-btns-group--inline-reverse fr-btns-group--inline-sm fr-btns-group--icon-left">
                                 <li>
@@ -89,10 +93,11 @@ <h3 class="fr-callout__title fr-text--sm">
 {% endblock content %}
 {% block extra_js %}
     <script type="text/javascript"
-            src="{% static 'js/siae_geo_range_field.js' %}"></script>
+            src="{% static 'js/perimeter_autocomplete_field.js' %}"></script>
     <script type="text/javascript">
-        // dynamic sector display based on sector group selection
         document.addEventListener('DOMContentLoaded', function() {
+            // -------------------------------------------------------------------
+            // dynamic sector display based on sector group selection
             let sectorGroupSelect = document.getElementById('id_sector_group');
             let sectorGroupSelectOptions = sectorGroupSelect.children;
             let sectorRadios = document.querySelectorAll('#checkboxes-id_sectors input[type="checkbox"][name="sectors"]');
@@ -135,6 +140,54 @@ <h3 class="fr-callout__title fr-text--sm">
                     showSectorsOfSelectedSectorGroup(event.target.value);
                 }
             })
+            // -------------------------------------------------------------------
+
+
+            // -------------------------------------------------------------------
+            // init locations autocomplete form fields
+            const LOCATION_AUTOCOMPLETE_ID = 'id_locations';
+            const LOCATION_AUTOCOMPLETE_CONTAINER_SELECTOR = '#dir_form_locations';
+            const LOCATION_SELECTED_CONTAINER_SELECTOR = '#locations-selected';
+            const LOCATION_HIDDEN_INPUT_SELECTOR_PREFIX = 'hiddenLocation';
+            const LOCATION_CURRENT_ID = 'current-locations';
+            const locationsAutoComplete = new PerimetersMultiAutocomplete(LOCATION_AUTOCOMPLETE_ID, LOCATION_AUTOCOMPLETE_CONTAINER_SELECTOR, LOCATION_SELECTED_CONTAINER_SELECTOR, LOCATION_HIDDEN_INPUT_SELECTOR_PREFIX, LOCATION_CURRENT_ID);
+            locationsAutoComplete.init();
+            // -------------------------------------------------------------------
+            
+
+            // -------------------------------------------------------------------
+            // geo range custom distance input
+            let geoRangeCustomDistanceInput = document.getElementById('id_geo_range_custom_distance');
+            let geoRangeCustomDistanceInputGroup = document.getElementById('geo_range_custom_distance_wrapper');
+            let geoRangeLocationsInputGroup = document.getElementById('geo_range_locations_wrapper');
+
+            function toggleGeoRangeFieldsAccordingToRadio(value) {
+                geoRangeLocationsInputGroup.style.display = 'none';
+                geoRangeCustomDistanceInputGroup.style.display = 'none';
+                geoRangeCustomDistanceInput.disabled = true;
+
+                if (value === 'CUSTOM') {
+                    geoRangeCustomDistanceInput.disabled = false;
+                    geoRangeCustomDistanceInputGroup.style.display = 'block';
+                } else if (value === 'ZONES') {
+                    geoRangeLocationsInputGroup.style.display = 'block';
+                }
+            }
+
+            let geoRangeRadios = document.querySelectorAll('input[type=radio][name="geo_range"]');
+            // init
+            geoRangeLocationsInputGroup.style.display = 'none';
+            geoRangeCustomDistanceInputGroup.style.display = 'none';
+            geoRangeRadios.forEach(radio => {
+                if (radio.checked) {
+                    toggleGeoRangeFieldsAccordingToRadio(radio.value);
+                }
+            });
+            // on change
+            geoRangeRadios.forEach(radio => radio.addEventListener('change', () => {
+                toggleGeoRangeFieldsAccordingToRadio(radio.value);
+            }));
+            // -------------------------------------------------------------------
         });
     </script>
 {% endblock extra_js %}
diff --git a/lemarche/templates/siaes/_siae_activity_card.html b/lemarche/templates/siaes/_siae_activity_card.html
index e5ea1776d..5788c5305 100644
--- a/lemarche/templates/siaes/_siae_activity_card.html
+++ b/lemarche/templates/siaes/_siae_activity_card.html
@@ -15,8 +15,6 @@ <h4>{{ activity.sector_group }}</h4>
                     </p>
                     <p>
                         <span class="fr-icon-map-pin-2-line" aria-hidden="true"></span>
-                        <span class="fr-sr-only">Intervient sur :</span>{{ activity.geo_range_pretty_title }}
-                        <span class="fr-icon-road-map-line fr-ml-2w" aria-hidden="true"></span>
                         <span>{{ activity.geo_range_pretty_display }}</span>
                     </p>
                 </div>
@@ -32,7 +30,7 @@ <h4>{{ activity.sector_group }}</h4>
                             <button id="siae-activity-delete-modal-btn"
                                     class="fr-btn fr-btn--sm fr-btn--tertiary-no-outline fr-icon-delete-line"
                                     x-data="activityItem"
-                                    x-init="initOptions('{{ activity.siae.slug }}','{{ activity.id }}','{{ activity.sector_group|escapejs }}')"
+                                    x-init="initOptions('{{ activity.id }}','{{ activity.sector_group|escapejs }}')"
                                     @click="remove"
                                     title="Supprimer l'activité">
                                 <i class="ri-delete-bin-line ri-xl"></i>
diff --git a/lemarche/www/dashboard_siaes/forms.py b/lemarche/www/dashboard_siaes/forms.py
index e0879afbb..cc6fd93b1 100644
--- a/lemarche/www/dashboard_siaes/forms.py
+++ b/lemarche/www/dashboard_siaes/forms.py
@@ -5,6 +5,7 @@
 from dsfr.forms import DsfrBaseForm
 
 from lemarche.networks.models import Network
+from lemarche.perimeters.models import Perimeter
 from lemarche.sectors.models import Sector
 from lemarche.siaes import constants as siae_constants
 from lemarche.siaes.models import (
@@ -18,6 +19,7 @@
     SiaeUserRequest,
 )
 from lemarche.utils.fields import GroupedModelMultipleChoiceField
+from lemarche.www.siaes.widgets import CustomLocationWidget
 
 
 class SiaeSearchBySiretForm(forms.Form):
@@ -266,15 +268,36 @@ class SiaeActivitiesCreateForm(forms.ModelForm):
         widget=forms.CheckboxSelectMultiple,
     )
     geo_range = forms.ChoiceField(
-        label=Siae._meta.get_field("geo_range").verbose_name,
-        choices=siae_constants.GEO_RANGE_CHOICES,
+        label=SiaeActivity._meta.get_field("geo_range").verbose_name,
+        choices=siae_constants.ACTIVITIES_GEO_RANGE_CHOICES,
+        initial=siae_constants.GEO_RANGE_COUNTRY,
         required=True,
         widget=forms.RadioSelect,
     )
     geo_range_custom_distance = forms.IntegerField(
         label="",
         required=False,
+        help_text="Distance mesurée depuis le point central de la ville où se situe votre structure.",
     )
+    locations = forms.ModelMultipleChoiceField(
+        label="Localisation",
+        queryset=Perimeter.objects.all(),
+        to_field_name="slug",
+        required=False,
+        widget=CustomLocationWidget(  # displayed with a JS autocomplete library (see `perimeter_autocomplete_field.js`)  # noqa
+            attrs={
+                "placeholder": "Région, département, ville",
+            }
+        ),
+        help_text="Vous pouvez ajouter autant de régions, de départements ou de villes que vous le souhaitez.",
+        # FIXME: help_text not displayed
+    )
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        # these fields are autocompletes
+        self.fields["locations"].choices = []
 
     def clean(self):
         cleaned_data = super().clean()
@@ -284,8 +307,20 @@ def clean(self):
         if geo_range == siae_constants.GEO_RANGE_CUSTOM and not geo_range_custom_distance:
             self.add_error("geo_range_custom_distance", "Une distance en kilomètres est requise pour cette option.")
 
+        if geo_range == siae_constants.GEO_RANGE_ZONES:
+            if not cleaned_data.get("locations"):
+                self.add_error(None, "Vous devez choisir au moins une zone d'intervention personnalisée.")
+        else:
+            cleaned_data["locations"] = []
         return cleaned_data
 
     class Meta:
         model = SiaeActivity
-        fields = ["sector_group", "sectors", "presta_type", "geo_range", "geo_range_custom_distance"]  # location
+        fields = [
+            "sector_group",
+            "sectors",
+            "presta_type",
+            "geo_range",
+            "geo_range_custom_distance",
+            "locations",
+        ]
diff --git a/lemarche/www/dashboard_siaes/tests.py b/lemarche/www/dashboard_siaes/tests.py
index 8f70a0828..b8f662ac7 100644
--- a/lemarche/www/dashboard_siaes/tests.py
+++ b/lemarche/www/dashboard_siaes/tests.py
@@ -2,7 +2,11 @@
 from django.urls import reverse
 
 from lemarche.conversations.factories import TemplateTransactionalFactory
-from lemarche.siaes.factories import SiaeFactory
+from lemarche.perimeters.factories import PerimeterFactory
+from lemarche.perimeters.models import Perimeter
+from lemarche.sectors.factories import SectorFactory, SectorGroupFactory
+from lemarche.siaes import constants as siae_constants
+from lemarche.siaes.factories import SiaeActivityFactory, SiaeFactory
 from lemarche.siaes.models import SiaeUser
 from lemarche.users.factories import UserFactory
 from lemarche.users.models import User
@@ -198,3 +202,358 @@ def test_only_siae_user_can_delete_collaborator(self):
         self.assertEqual(response.url, reverse("dashboard_siaes:siae_users", args=[self.siae_with_users.slug]))
         self.assertEqual(self.siae_with_users.users.count(), 1)
         # TODO: user should not be able to delete itself
+
+
+class DashboardSiaeEditActivitiesViewTest(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.user_siae = UserFactory(kind=User.KIND_SIAE)
+        cls.siae_with_user = SiaeFactory()
+        cls.siae_with_user.users.add(cls.user_siae)
+
+    def test_only_siae_user_can_access_siae_activities(self):
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Ajouter un secteur d'activité")
+
+        self.client.force_login(UserFactory(kind=User.KIND_SIAE))
+        url = reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(response.url, "/profil/")
+
+    def test_siae_user_can_see_siae_activity_in_list(self):
+        siae_activity = SiaeActivityFactory(siae=self.siae_with_user)
+        sector = SectorFactory(group=siae_activity.sector_group)
+        siae_activity.sectors.add(sector)
+
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Ajouter un secteur d'activité")
+        self.assertContains(
+            response, reverse("dashboard_siaes:siae_edit_activities_create", args=[self.siae_with_user.slug])
+        )
+
+        self.assertContains(response, sector.name)
+        self.assertContains(response, siae_activity.presta_type_display)
+        self.assertContains(response, siae_activity.geo_range_pretty_display)
+
+        self.assertContains(
+            response,
+            reverse("dashboard_siaes:siae_edit_activities_edit", args=[self.siae_with_user.slug, siae_activity.id]),
+        )
+
+
+class DashboardSiaeEditActivitiesCreateViewTest(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.user_siae = UserFactory(kind=User.KIND_SIAE)
+        cls.siae_with_user = SiaeFactory()
+        cls.siae_with_user.users.add(cls.user_siae)
+
+        cls.sector_group = SectorGroupFactory()
+        cls.sector1 = SectorFactory(group=cls.sector_group)
+        cls.sector2 = SectorFactory(group=cls.sector_group)
+
+    def test_only_siae_user_can_create_siae_activity(self):
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_create", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+        self.client.force_login(UserFactory(kind=User.KIND_SIAE))
+        url = reverse("dashboard_siaes:siae_edit_activities_create", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(response.url, reverse("dashboard:home"))
+
+    def test_siae_user_can_create_siae_activity_with_country_range(self):
+        self.assertEqual(self.siae_with_user.activities.count(), 0)
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_create", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+        data = {
+            "sector_group": self.sector_group.id,
+            "sectors": [self.sector1.id, self.sector2.id],
+            "presta_type": [siae_constants.PRESTA_PREST],
+            "geo_range": siae_constants.GEO_RANGE_COUNTRY,
+        }
+        response = self.client.post(url, data=data)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(
+            response.url, reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        )
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        created_activity = self.siae_with_user.activities.first()
+        self.assertEqual(created_activity.sector_group, self.sector_group)
+        self.assertEqual(created_activity.sectors.count(), 2)
+        self.assertIn(self.sector1, created_activity.sectors.all())
+        self.assertIn(self.sector2, created_activity.sectors.all())
+        self.assertEqual(created_activity.presta_type, [siae_constants.PRESTA_PREST])
+        self.assertEqual(created_activity.geo_range, siae_constants.GEO_RANGE_COUNTRY)
+
+    def test_siae_user_can_create_siae_activity_with_custom_range(self):
+        self.assertEqual(self.siae_with_user.activities.count(), 0)
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_create", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+        data = {
+            "sector_group": self.sector_group.id,
+            "sectors": [self.sector1.id],
+            "presta_type": [siae_constants.PRESTA_DISP],
+            "geo_range": siae_constants.GEO_RANGE_CUSTOM,
+        }
+        response = self.client.post(url, data=data)
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Une distance en kilomètres est requise pour cette option.")
+
+        self.assertEqual(self.siae_with_user.activities.count(), 0)
+
+        data["geo_range_custom_distance"] = 10
+        response = self.client.post(url, data=data)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(
+            response.url, reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        )
+
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        created_activity = self.siae_with_user.activities.first()
+        self.assertEqual(created_activity.sector_group, self.sector_group)
+        self.assertEqual(created_activity.sectors.count(), 1)
+        self.assertEqual(created_activity.sectors.first(), self.sector1)
+        self.assertEqual(created_activity.presta_type, [siae_constants.PRESTA_DISP])
+        self.assertEqual(created_activity.geo_range, siae_constants.GEO_RANGE_CUSTOM)
+        self.assertEqual(created_activity.geo_range_custom_distance, 10)
+
+    def test_siae_user_can_create_siae_activity_with_zones_range(self):
+        self.assertEqual(self.siae_with_user.activities.count(), 0)
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_create", args=[self.siae_with_user.slug])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+        data = {
+            "sector_group": self.sector_group.id,
+            "sectors": [self.sector2.id],
+            "presta_type": [siae_constants.PRESTA_BUILD],
+            "geo_range": siae_constants.GEO_RANGE_ZONES,
+        }
+        response = self.client.post(url, data=data)
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Vous devez choisir au moins une zone")
+        self.assertEqual(self.siae_with_user.activities.count(), 0)
+
+        perimeter_city = PerimeterFactory(name="Azay-le-rideau", kind=Perimeter.KIND_CITY, insee_code="37190")
+        perimeter_department = PerimeterFactory(
+            name="Vienne", kind=Perimeter.KIND_DEPARTMENT, insee_code="86", region_code="75"
+        )
+        perimeter_region = PerimeterFactory(name="Nouvelle-Aquitaine", kind=Perimeter.KIND_REGION, insee_code="R75")
+
+        data["locations"] = [perimeter_city.slug, perimeter_department.slug, perimeter_region.slug]
+        response = self.client.post(url, data=data)
+
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(
+            response.url, reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        )
+
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        created_activity = self.siae_with_user.activities.first()
+        self.assertEqual(created_activity.sector_group, self.sector_group)
+        self.assertEqual(created_activity.sectors.count(), 1)
+        self.assertEqual(created_activity.sectors.first(), self.sector2)
+        self.assertEqual(created_activity.presta_type, [siae_constants.PRESTA_BUILD])
+        self.assertEqual(created_activity.geo_range, siae_constants.GEO_RANGE_ZONES)
+        self.assertEqual(created_activity.locations.count(), 3)
+        self.assertIn(perimeter_city, created_activity.locations.all())
+        self.assertIn(perimeter_department, created_activity.locations.all())
+        self.assertIn(perimeter_region, created_activity.locations.all())
+
+
+class DashboardSiaeEditActivitiesEditViewTest(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.user_siae = UserFactory(kind=User.KIND_SIAE)
+        cls.siae_with_user = SiaeFactory()
+        cls.siae_with_user.users.add(cls.user_siae)
+
+    def test_only_siae_user_can_edit_siae_activity(self):
+        siae_activity = SiaeActivityFactory(siae=self.siae_with_user)
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+
+        self.client.force_login(UserFactory(kind=User.KIND_SIAE))
+        url = reverse("dashboard_siaes:siae_edit_activities_edit", args=[self.siae_with_user.slug, siae_activity.id])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(response.url, reverse("dashboard:home"))
+
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_edit", args=[self.siae_with_user.slug, siae_activity.id])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_siae_user_can_edit_siae_activity_to_custom_range(self):
+        siae_activity = SiaeActivityFactory(
+            siae=self.siae_with_user, with_country_perimeter=True, presta_type=[siae_constants.PRESTA_DISP]
+        )
+        sector_before = SectorFactory(group=siae_activity.sector_group)
+        siae_activity.sectors.add(sector_before)
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        self.assertEqual(siae_activity.geo_range, siae_constants.GEO_RANGE_COUNTRY)
+        self.assertEqual(siae_activity.sectors.count(), 1)
+        self.assertEqual(siae_activity.sectors.first(), sector_before)
+
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_edit", args=[self.siae_with_user.slug, siae_activity.id])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+        sector_after = SectorFactory()
+        data = {
+            "sector_group": sector_after.group.id,
+            "sectors": [sector_after.id],
+            "presta_type": [siae_constants.PRESTA_BUILD],
+            "geo_range": siae_constants.GEO_RANGE_CUSTOM,
+            "geo_range_custom_distance": 42,
+        }
+        response = self.client.post(url, data=data)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(
+            response.url, reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        )
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        updated_activity = self.siae_with_user.activities.first()
+        self.assertEqual(updated_activity.sector_group, sector_after.group)
+        self.assertEqual(updated_activity.sectors.count(), 1)
+        self.assertEqual(updated_activity.sectors.first(), sector_after)
+        self.assertEqual(updated_activity.presta_type, [siae_constants.PRESTA_BUILD])
+        self.assertEqual(updated_activity.geo_range, siae_constants.GEO_RANGE_CUSTOM)
+
+    def test_siae_user_can_edit_siae_activity_to_zones(self):
+        siae_activity = SiaeActivityFactory(
+            siae=self.siae_with_user, with_custom_distance_perimeter=True, presta_type=[siae_constants.PRESTA_DISP]
+        )
+        sector_before = SectorFactory(group=siae_activity.sector_group)
+        siae_activity.sectors.add(sector_before)
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        self.assertEqual(siae_activity.geo_range, siae_constants.GEO_RANGE_CUSTOM)
+        self.assertIsNotNone(siae_activity.geo_range_custom_distance)
+        self.assertEqual(siae_activity.sectors.count(), 1)
+        self.assertEqual(siae_activity.sectors.first(), sector_before)
+        self.assertEqual(siae_activity.locations.count(), 0)
+
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_edit", args=[self.siae_with_user.slug, siae_activity.id])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+        sector_after = SectorFactory()
+        perimeter_city = PerimeterFactory(name="Azay-le-rideau", kind=Perimeter.KIND_CITY, insee_code="37190")
+        perimeter_department = PerimeterFactory(
+            name="Vienne", kind=Perimeter.KIND_DEPARTMENT, insee_code="86", region_code="75"
+        )
+        data = {
+            "sector_group": sector_after.group.id,
+            "sectors": [sector_after.id],
+            "presta_type": [siae_constants.PRESTA_BUILD],
+            "geo_range": siae_constants.GEO_RANGE_ZONES,
+            "locations": [perimeter_city.slug, perimeter_department.slug],
+        }
+        response = self.client.post(url, data=data)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(
+            response.url, reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        )
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        updated_activity = self.siae_with_user.activities.first()
+        self.assertEqual(updated_activity.sector_group, sector_after.group)
+        self.assertEqual(updated_activity.sectors.count(), 1)
+        self.assertEqual(updated_activity.sectors.first(), sector_after)
+        self.assertEqual(updated_activity.presta_type, [siae_constants.PRESTA_BUILD])
+        self.assertEqual(updated_activity.geo_range, siae_constants.GEO_RANGE_ZONES)
+        self.assertEqual(updated_activity.locations.count(), 2)
+        self.assertIn(perimeter_city, updated_activity.locations.all())
+        self.assertIn(perimeter_department, updated_activity.locations.all())
+        self.assertIsNone(updated_activity.geo_range_custom_distance)
+
+    def test_siae_user_can_edit_siae_activity_to_country(self):
+        siae_activity = SiaeActivityFactory(
+            siae=self.siae_with_user, with_zones_perimeter=True, presta_type=[siae_constants.PRESTA_DISP]
+        )
+        sector_before = SectorFactory(group=siae_activity.sector_group)
+        siae_activity.sectors.add(sector_before)
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        self.assertEqual(siae_activity.geo_range, siae_constants.GEO_RANGE_ZONES)
+        self.assertEqual(siae_activity.sectors.count(), 1)
+        self.assertEqual(siae_activity.sectors.first(), sector_before)
+
+        perimeter_city = PerimeterFactory(name="Azay-le-rideau", kind=Perimeter.KIND_CITY, insee_code="37190")
+        perimeter_department = PerimeterFactory(
+            name="Vienne", kind=Perimeter.KIND_DEPARTMENT, insee_code="86", region_code="75"
+        )
+        siae_activity.locations.add(perimeter_city, perimeter_department)
+        siae_activity.refresh_from_db()
+        self.assertEqual(siae_activity.locations.count(), 2)
+
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_edit", args=[self.siae_with_user.slug, siae_activity.id])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+        sector_after = SectorFactory()
+        data = {
+            "sector_group": sector_after.group.id,
+            "sectors": [sector_after.id],
+            "presta_type": [siae_constants.PRESTA_BUILD],
+            "geo_range": siae_constants.GEO_RANGE_COUNTRY,
+        }
+        response = self.client.post(url, data=data)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(
+            response.url, reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        )
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+        updated_activity = self.siae_with_user.activities.first()
+        self.assertEqual(updated_activity.sector_group, sector_after.group)
+        self.assertEqual(updated_activity.sectors.count(), 1)
+        self.assertEqual(updated_activity.sectors.first(), sector_after)
+        self.assertEqual(updated_activity.presta_type, [siae_constants.PRESTA_BUILD])
+        self.assertEqual(updated_activity.geo_range, siae_constants.GEO_RANGE_COUNTRY)
+        self.assertEqual(updated_activity.locations.count(), 0)
+        self.assertIsNone(updated_activity.geo_range_custom_distance)
+
+
+class DashboardSiaeEditActivitiesDeleteViewTest(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.user_siae = UserFactory(kind=User.KIND_SIAE)
+        cls.siae_with_user = SiaeFactory()
+        cls.siae_with_user.users.add(cls.user_siae)
+
+    def test_only_siae_user_can_delete_siae_activity(self):
+        siae_activity = SiaeActivityFactory(siae=self.siae_with_user)
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+
+        self.client.force_login(UserFactory(kind=User.KIND_SIAE))
+        url = reverse("dashboard_siaes:siae_edit_activities_delete", args=[self.siae_with_user.slug, siae_activity.id])
+        response = self.client.post(url)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(response.url, reverse("dashboard:home"))
+        self.assertEqual(self.siae_with_user.activities.count(), 1)
+
+        self.client.force_login(self.user_siae)
+        url = reverse("dashboard_siaes:siae_edit_activities_delete", args=[self.siae_with_user.slug, siae_activity.id])
+        response = self.client.post(url)
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(
+            response.url, reverse("dashboard_siaes:siae_edit_activities", args=[self.siae_with_user.slug])
+        )
+        self.assertEqual(self.siae_with_user.activities.count(), 0)
diff --git a/lemarche/www/dashboard_siaes/views.py b/lemarche/www/dashboard_siaes/views.py
index 2e8eb6fb2..242ddb94a 100644
--- a/lemarche/www/dashboard_siaes/views.py
+++ b/lemarche/www/dashboard_siaes/views.py
@@ -250,6 +250,7 @@ def get_context_data(self, **kwargs):
         context["page_title"] = "Modifier une activité"
         context["siae"] = self.siae
         context["activity"] = self.object
+        context["current_locations"] = list(self.object.locations.values("id", "slug", "name"))
         context["breadcrumb_data"] = {
             "root_dir": settings_context_processors.expose_settings(self.request)["HOME_PAGE_PATH"],
             "links": [