Open PTT
. Select Options > PTT contacts > Netw. grps./ channels. Scroll to a group and select Options > Open.
To edit the group details, select Options > Edit. You may not be able to edit all network groups.
To remove the group from your PTT contacts, select Options > Delete.
To edit the group details, select Edit.
To remove the group from your PTT contacts, scroll to it and press C.