HYT TC-780M Manual page 47

"44 Group Call Mode"
Press / to select Group Number/Alias.
to save the setting and return to "44 Group Call Mode"
Press
-or-
C
to return to "44 Group Call Mode" without saving the setting.
44 Group Call Mode
Group Number
"45 Incoming Call Alert"
Press / to select Mute/Ringing/Vibrating/Ringing+Vibrating.
to save the setting and return to "45 Incoming Call Alert"
Press
-or-
C
to return to "45 Incoming Call Alert" without saving the setting.
45 Incoming Call Alert
Mute
"46 VOX Level"
Press / to select a desired level (Off, 1~5).
to save the setting and return to "46 VOX Level"
Press
-or-
C
to return to "46 VOX Level" without saving the setting.
46 VOX Level
Off 1
Alias
Ringing
2 3
Vibrating Ringing
4 5
+Vibrating
46