The Administrators Module is only available to account owners. This is the first account set and connected to your dashboard.
With the Administrator module, you may add additional administrators to your dashboard. #delegation yeah!
These may be media managers, staff, or anyone that needs access to your dashboard to help you or do the job for you. The only thing Administrators can't do that Owners can do is add new/edit other administrators or access your billing.
Make sure the users you add here are trusted users.