You can edit or delete user groups.
From the navigation pane, go to Manage > Security.
The Security page appears.
Click the Users groups tile.
The Users groups page appears.
Decide if you want to edit or delete a user group:
To edit a user group, click the user group name, under General click Edit, and in the Edit user group dialog box, update the user group information.
To delete a user group, in the Actions column for the user group, click the action button and click Delete.
If you edited the user group, click Save.