While each member can be assigned as an Admin or Member for any Workspace, Adminja also allows you to designate members as "Team Administrators" by checking the "Can administrate entire team" option when assigning their workspaces.
Team Administrators not only have permission to change any and all tasks, see any and all task histories and see the billing tab and billing rates in reports...they also have the permission to manage Workspaces and Team Members for this account. With a few exceptions (namely subscription management and Client Plans), they have the same permissions as the account owner.
If someone is a Team Administrator, they will notice a Select Account option at the top of their Time Reports module and the Workspace Manager. They can use this toggle to choose between managing their own Adminja account ,or the account belonging to the team owner who gave them administrative control.