There are three different types of user:
* Agents - your support team who answer tickets
* Staff - other users who work for your company, who can view and raise tickets but not reply to them
* Customers - users who work for outside Clients that you're providing support for
Users all belong to a Client. All your agents and staff belong to "Your Company" which was created when you signed up.
See Clients for how to further manage Clients using your system.