Hello Dejan,

Thank you for joining us here in the Community. Allow me to chime in and confirm things about the Spreadsheet Sync feature in QuickBooks Online Advanced.

You're right. The primary admin and all company admin users added to the account can use the feature.

There's no limit to users who can access Spreadsheet Sync. As long as users are added as a company admins, they can access this section.

Also, users with the appropriate permissions can manage user profiles in QuickBooks Online. I've included a link you can check out for additional guidance on the process: Add and manage users in QuickBooks Online.

Please let me know if you need anything else regarding sharing data between Spreadsheet Sync and QuickBooks. We'll be sure to lend a hand. Keep safe.