diff --git a/docs/content_management/img/block_overrides.png b/docs/content_management/img/block_overrides.png
new file mode 100644
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Binary files /dev/null and b/docs/content_management/img/block_overrides.png differ
diff --git a/docs/content_management/pages/page_blocks.md b/docs/content_management/pages/page_blocks.md
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--- a/docs/content_management/pages/page_blocks.md
+++ b/docs/content_management/pages/page_blocks.md
@@ -6,3 +6,19 @@ description: Use blocks to customize the content of a Page with dynamic content.
 
 [[= product_name =]] ships with a number of page blocks.
 For a list of all page blocks that are available out-of-the-box, see [Page block reference]([[= user_doc =]]/content_management/block_reference/) in the user documentation.
+
+## Block overrides
+
+You can change the name, category, icon, or availability of a block type.
+
+1. In the left panel, go to **Administration** -> **SiteAccess Configuration**.
+1. Choose the SiteAccess that you want to override the block type for. Choosing none or admin has no effect.
+1. In **Available configurations** list, click  **Page Builder Overrides**.
+1. In **Edit configuration** section, under **Block overrides**, click **Add** to add a block type override.
+1. Expand the **Block identifier** drop-down list and select a block that you want to override.
+1. Define the override details and click **Save** to apply your changes.
+
+- To add more overrides, click **Add** again.
+- To remove an existing override, repeat the steps to display a list of defined overrides and click the trash icon at the end of a row.
+
+![Screenshot of tag block made unavailable](block_overrides.png "Code block type (`tag`) made unavailable")