The Account Manager provides an overview of user and group system installed on ClearOS.
If your system does not have this app available, you can install it via the Marketplace.
You can find this feature in the menu system at the following location:
<navigation>System|Accounts Manager|Account Manager</navigation>
Here you will find a list of plugins which a user will need specific authorisation to use;
The same can also be achieved in the Systems|Accounts|Users screen and in the individual app screens.