Double-click on a User Group Name, type a new name in the New Name field of the Rename User Group Dialog dialog box, and click Save .
Note:
You cannot rename a User Group using a name that already exists, regardless of character case. To change the case of any characters in a User Group Name, first rename the User Group using at least one different character, and then rename the User Group using the original characters with the new case. For example, to change the case of the User Group MANAGER, rename the User Group using MANAGER1, and then rename it again using Manager.