Access the Administration Server and choose the Users and Groups tab.
Click the Manage Groups link and locate the group you want to manage as described in Finding Group Entries.
Click Rename Group and type the new group name in the resulting dialog box.
When you rename a group entry, you only change the group’s name. You cannot use the Rename Group feature to move the entry from one organizational unit to another. For example, a business might have the following organizations:
organizational units for Marketing and Product Management
a group named Online Sales under the Marketing organizational unit
In this example, you can rename the group from Online Sales to Internet Investments, but you cannot rename the entry such that Online Sales under the Marketing organizational unit becomes Online Sales under the Product Management organizational unit.