Depress the Scroll Knob, then release it, then turn it to the EDACS System you want to edit.
Wait for the F icon on LCD to drop after 3 seconds.
Turn the scroll knob to the Talkgroup you want to unlock then press the L/O key
or
Press Menu > Program System > Turn scroll to EDACS System > Edit Group > Select Group with TGID to Unlock > Edit Channel > Select Talk Group ID > Set Lockout > Unlocked