The groups on a collection's page follow the order of the sub collection pages inside that collection in Notion. To rearrange them, open the collection page, grab a sub collection by its ⠿ handle, and drag it above or below its neighbors.
The new order applies wherever groups appear: the section list on the collection's page in the Help Center layout and the sidebar groups in the Documentation layout. A good rule of thumb is to keep your most-visited group at the top — visitors rarely scroll past the first couple of sections.
📽 Video Instruction:

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Don't skip the sync step — drag-and-drop changes reach your live site on the next Resync (Settings → Help Centers) or automatic sync run.
