[All Hosts] (manifest) reorg the manifest part of the TOC

docs/includes/manifest-guidance.md

@@ -1,7 +1,12 @@
 > [!TIP]
 > If you'll be testing your add-in across multiple environments (for example, in development, staging, demo, etc.), we recommend that you maintain a different manifest file for each environment. In each manifest file, you can:
+> 
 > - Specify the URLs that correspond to the environment.
-> - Customize metadata values like `DisplayName` and labels within `Resources` to indicate the environment, so that end users will be able to identify a sideloaded add-in's corresponding environment. 
+> - Customize metadata values so that end users are able to identify a sideloaded add-in's corresponding environment. For example:
+>
+>    - In the unified manifest for Microsoft 365, customize the "name" property of the add-in and the "label" properties for various UI controls to indicate the environment.
+>    - In the add-in only manifest, customize the `DisplayName` element and and labels within the `Resources` element to indicate the environment. 
+>
 > - Customize the custom functions `namespace` to indicate the environment, if your add-in defines custom functions.
 > 
 > By following this guidance, you'll streamline the testing process and avoid issues that would otherwise occur when an add-in is simultaneously sideloaded for multiple environments.

docs/toc.yml

@@ -116,23 +116,27 @@ items:
       items:
       - name: Overview
         href: develop/add-in-manifests.md
-      - name: Office Add-ins with the add-in only manifest
-        href: develop/xml-manifest-overview.md
-      - name: Office Add-ins with the unified manifest for Microsoft 365
-        href: develop/unified-manifest-overview.md
-      - name: Compare the add-in only manifest with the unified manifest for Microsoft 365
-        href: develop/json-manifest-overview.md
-      - name: Convert an add-in to use the unified manifest for Microsoft 365
-        href: develop/convert-xml-to-json-manifest.md
-      - name: Add-in only manifest reference
-        href: reference/manifest-reference.md
-      - name: Extended overrides
-        href: develop/extended-overrides.md
-      - name: Find the proper order of manifest elements
-        href: develop/manifest-element-ordering.md
-      - name: Update API and manifest version
-        href: develop/update-your-javascript-api-for-office-and-manifest-schema-version.md
-        displayName: manifest
+      - name: Unified manifest for Microsoft 365
+        items: 
+        - name: Office Add-ins with the unified manifest for Microsoft 365
+          href: develop/unified-manifest-overview.md
+        - name: Compare the add-in only manifest with the unified manifest for Microsoft 365
+          href: develop/json-manifest-overview.md
+        - name: Convert an add-in to use the unified manifest for Microsoft 365
+          href: develop/convert-xml-to-json-manifest.md
+      - name: Add-in only manifest
+        items:
+        - name: Office Add-ins with the add-in only manifest
+          href: develop/xml-manifest-overview.md
+        - name: Add-in only manifest reference
+          href: reference/manifest-reference.md
+        - name: Extended overrides
+          href: develop/extended-overrides.md
+        - name: Find the proper order of manifest elements
+          href: develop/manifest-element-ordering.md
+        - name: Update API and manifest version
+          href: develop/update-your-javascript-api-for-office-and-manifest-schema-version.md
+          displayName: manifest
     - name: Privacy, security, and storage
       items:
       - name: Overview of add-in privacy and security