From the Settings Tab, click Users, click Groups, and click the "+ Add Group" button to create a group of users

1. Enter Group Name

2. Select Users from list of available users in your company

3. Click "Add Group" button to save group

Once group is created, individual users can be removed from a group by using the "X" button tied to their name in the main Groups tab, or use the Action buttons for that group to edit or delete a group.