navigation yml for dropdown

_config.yml

@@ -1,12 +1,8 @@
 ---
   defaults:
-    # _docs
-    - scope:
-        path: ""
-        type: main
-      values:
-        sidebar:
-          nav: "main"
+    values:
+      sidebar:
+        nav: "main"
 ---        
 
 theme: jekyll-theme-minimal

data/navigation.yml

@@ -1,3 +1,11 @@
 main:
+- title: "Moving from PoC to Production"
+  url: https://digicatapult.github.io/bridgeAI-MLOps-knowledge-hub/PoC_to_production.html
+- title: "Horizon Scan"
+  url: https://digicatapult.github.io/bridgeAI-MLOps-knowledge-hub/HORIZON_SCAN.html
+- title: "Skills and Roles"
+  url: https://digicatapult.github.io/bridgeAI-MLOps-knowledge-hub/skills_roles.html
+- title: "MLOps - The actual process"
+  url: https://digicatapult.github.io/bridgeAI-MLOps-knowledge-hub/actual_process.html
 - title: "Effective Deployment"
   url: https://digicatapult.github.io/bridgeAI-MLOps-knowledge-hub/effective_deployment.html