As a Control Center system administrator (CSA), you can manage users and their permissions for your enterprise ID. When you create a new user, they'll receive emails with their user ID, login instructions, and a temporary password. If a user's job duties change, you can update their profile to change the features they can access in Control Center. You can also make additional system administrators (who have access to everything under your enterprise ID and can make changes to users on your behalf if you're unavailable).
As a system administrator, you can also manage the accounts on your enterprise ID and which users at your company can access and manage those accounts.