Owners and admins in a business workspace can set folder access group rules. Personal workspaces do not use this control.
Choose where new files from a synced folder belong. The saved rule applies to future syncs from that folder on that connection, so you do not have to repeat the same filing decision for each new file.
Choose Set access
On the synced folder, select Set access and choose the destination. If a rule already exists, select the displayed access group name to change it. Your choice saves immediately.
Check the saved destination
The folder now displays its access group. New files discovered under this saved folder selection use that destination on future syncs. Setting a rule does not bulk-move documents already in your Library. Assigning Access to files in a Library folder is a separate, one-time edit and does not create this sync rule.
When you move a synced document to an access group in the Library, you may see: “Apply to everything synced from this folder going forward?” Choose Yes to save a folder rule, or Just this doc to keep the change limited to that document. This follow-up appears when the source folder is known and does not already have a rule.