User groups allow you to easily manage employees in Centrium, or create company divisions.

You can also use them to setup permissions to access data stored in Centrium.
To set up user group's go to "Groups" tab in account settings menu. To add or remove people from group - click the edit icon.

You need administrator privileges to manage user groups. You can also use this link to access users groups settings page: https://app.centriumcrm.com/#settings/groups