Super Administrators are able to create and manage User Groups. Navigate to the Groups area under the System section of the Menu.
You will be presented with a list of User Groups. Click Create users group in the Toolbox.
In the popup window, give your new User Group a name, and click Create.
You will be taken to your group straight away. Next, you might want to add Users to your User Group.
Note: Super Administrators are created by adding Users to the Super Administrator User Group. See this guide for further information.