Hitachi TD61-2472 - Manual (Page 20)

4 To delete a group, select the group to delete, press the LeftSoft key to select
the sub-menu, then select "2. Delete".
* After the deletion completion message is displayed, the display returns to
the contact list menu.
5 To change a group (name), select the group to change, then press the key.
Edit according to Step 3. After this, when you press the key and save the
new group name, the display returns to the contact list menu.
Hitachi Cable 16