Press [Administrator Tools] on the [System Settings] screen.
For details about how to access the [System Settings] screen, see Displaying the Printer Configuration Screens Using the Control Panel.
Press [Address Book: Program/Change/Delete Group].
Press [Change].
Select the group that you want to put into another group.
Press the group key, or enter the registered number using the number keys.
You can search by the registered name.
Press [Add to Group].
Select the group to which you want to add.
The group key that you have selected becomes highlighted, and the group is added to it.
Press [Exit].
Press [OK].
Press the [User Tools] key.