diff --git a/src/Umbraco.Web.UI.Client/src/stories/extending/actions.stories.mdx b/src/Umbraco.Web.UI.Client/src/stories/extending/entity-actions.stories.mdx
similarity index 87%
rename from src/Umbraco.Web.UI.Client/src/stories/extending/actions.stories.mdx
rename to src/Umbraco.Web.UI.Client/src/stories/extending/entity-actions.stories.mdx
index 90474b912d..e05954a726 100644
--- a/src/Umbraco.Web.UI.Client/src/stories/extending/actions.stories.mdx
+++ b/src/Umbraco.Web.UI.Client/src/stories/extending/entity-actions.stories.mdx
@@ -1,8 +1,11 @@
 import { Meta } from '@storybook/addon-docs';
 
-<Meta title="Guides/Extending the Backoffice/Actions" parameters={{ previewTabs: { canvas: { hidden: true } } }} />
+<Meta
+	title="Guides/Extending the Backoffice/Entity Actions"
+	parameters={{ previewTabs: { canvas: { hidden: true } } }}
+/>
 
-# Actions
+# Entity Actions
 
 TODO: introduction to actions
 
@@ -12,10 +15,7 @@ TODO: introduction to actions
 - **Entity Bulk Action:**
   Relates to an entity type: document, media, etc. Performs the action on a selection of items.
 
-- **Workspace Action:**
-  Relates to a workspace alias (Umb.Workspace.Document). Performs the action on the workspace draft state.
-
-TODO: graphically show the different types of actions
+<img src="entity-action-sidebar-context.svg" width="400" />
 
 ### Registering an Entity Action
 
diff --git a/src/Umbraco.Web.UI.Client/src/stories/extending/registration.stories.mdx b/src/Umbraco.Web.UI.Client/src/stories/extending/registration.stories.mdx
index 7b06b2f779..a62b1eb036 100644
--- a/src/Umbraco.Web.UI.Client/src/stories/extending/registration.stories.mdx
+++ b/src/Umbraco.Web.UI.Client/src/stories/extending/registration.stories.mdx
@@ -8,22 +8,8 @@ Registering UI extensions happens through the global extension registry.
 
 There are two ways to register UI extensions:
 
-1. Directly through a manifest file
-2. Referencing a "Start up" resource in the manifest where full control over registration can take place.
-
-## Manifest files
-
-```json
-{
-	"type": "", // type of extension
-	"alias": "", // unique alias for the extension
-	"elementName": "", // unique name of the custom element
-	"js": "", // path to the javascript resource
-	"meta": {
-		// additional props for the extension type
-	}
-}
-```
+1. Reference an entry point resource in the manifest where full control over registration can take place.
+2. Directly through a manifest file
 
 ## Entry Point Files
 
@@ -56,3 +42,17 @@ const manifest = {
 
 extensionRegistry.register(extension);
 ```
+
+## Manifest JSON files
+
+```json
+{
+	"type": "", // type of extension
+	"alias": "", // unique alias for the extension
+	"elementName": "", // unique name of the custom element
+	"js": "", // path to the javascript resource
+	"meta": {
+		// additional props for the extension type
+	}
+}
+```
diff --git a/src/Umbraco.Web.UI.Client/src/stories/extending/sections.stories.mdx b/src/Umbraco.Web.UI.Client/src/stories/extending/sections.stories.mdx
index bc61b2f7ce..9d75b0a2a9 100644
--- a/src/Umbraco.Web.UI.Client/src/stories/extending/sections.stories.mdx
+++ b/src/Umbraco.Web.UI.Client/src/stories/extending/sections.stories.mdx
@@ -3,3 +3,74 @@ import { Meta } from '@storybook/addon-docs';
 <Meta title="Guides/Extending the Backoffice/Sections" parameters={{ previewTabs: { canvas: { hidden: true } } }} />
 
 # Sections
+
+TODO: Introduction to sections
+
+<img src="docs/section.svg" width="300" />
+
+The section manifest:
+
+TODO: can we get a typescript interface here?
+
+```json
+{
+	"type": "section",
+	"alias": "My.Section",
+	"name": "My Section",
+	"weight": 10,
+	"meta": {
+		"label": "My Section",
+		"pathname": "my-section"
+	}
+}
+```
+
+The Backoffice ships with the following sections:
+Content, Media, Members, Packages, Users, Settings.
+
+## Section Sidebar
+
+TODO: Introduction to section sidebar
+
+<img src="docs/section-sidebar.svg" width="300" />
+
+### Sidebar Items
+
+TODO: Introduction to section sidebar items
+
+<img src="docs/section-sidebar-item.svg" width="300" />
+
+#### Manifest
+
+TODO: not implemented yet
+
+#### Sidebar Menu
+
+```json
+{
+	"type": "sidebarMenu",
+	"alias": "My.SidebarMenu.Something",
+	"name": "Something Sidebar Menu",
+	"weight": 10,
+	"meta": {
+		"label": "My Something Sidebar Menu",
+		"sections": ["My.Section"]
+	}
+}
+```
+
+#### Sidebar Menu Item
+
+```json
+{
+  "type": "sidebarMenuItem",
+	"alias": "Umb.SidebarMenuItem.Documents",
+	"name": "Documents Sidebar Menu Item",
+	"weight": 10,
+	"meta": {
+		"label": "Documents",
+		"icon": "umb:folder",
+		"sidebarMenus": ["Umb.SidebarMenu.Content"],
+	},
+};
+```
diff --git a/src/Umbraco.Web.UI.Client/src/stories/extending/workspace-views.stories.mdx b/src/Umbraco.Web.UI.Client/src/stories/extending/workspace-views.stories.mdx
deleted file mode 100644
index 2107d4df44..0000000000
--- a/src/Umbraco.Web.UI.Client/src/stories/extending/workspace-views.stories.mdx
+++ /dev/null
@@ -1,8 +0,0 @@
-import { Meta } from '@storybook/addon-docs';
-
-<Meta
-	title="Guides/Extending the Backoffice/Workspace Views"
-	parameters={{ previewTabs: { canvas: { hidden: true } } }}
-/>
-
-# Workspace Views
diff --git a/src/Umbraco.Web.UI.Client/src/stories/extending/workspaces.stories.mdx b/src/Umbraco.Web.UI.Client/src/stories/extending/workspaces.stories.mdx
index 30a3c8ca01..376b51eb80 100644
--- a/src/Umbraco.Web.UI.Client/src/stories/extending/workspaces.stories.mdx
+++ b/src/Umbraco.Web.UI.Client/src/stories/extending/workspaces.stories.mdx
@@ -3,3 +3,9 @@ import { Meta } from '@storybook/addon-docs';
 <Meta title="Guides/Extending the Backoffice/Workspaces" parameters={{ previewTabs: { canvas: { hidden: true } } }} />
 
 # Workspaces
+
+## Workspace Views
+
+## Workspace Actions
+
+Relates to a workspace alias (Umb.Workspace.Document). Performs the action on the workspace draft state.