You can check the names or groups registered in each group.
Press the [User Tools/Counter] key.
Press [System Settings].
Press [Administrator Tools].
Press [Address Book: Program / Change / Delete Group].
Check that [Program / Change] is selected.
Select the group where the members you want to check is registered.
You can search by the registered name.
Press [Programmed User/Group].
Press [OK].
Press [Exit].
Press the [User Tools/Counter] key.