You can remove an administrator from a workgroup, or you can revoke their administrator access and keep them in the workgroup as a basic user.
Select Settings from the Account drop-down list.
On the Settings page, select Account, and then select Manage Workgroups. The Workgroup Admin Console opens.
Select a workgroup in the Dashboard.
Select Overview.
Select the checkbox for each administrator you want to remove.
Select Remove.
To remove the administrator from the workgroup, select Remove these users from this workgroup.
Select Remove.