82 PANEL DESCRIPTION! Programmable function keysThe following functions can be assigned to [P0], [P1], [P2], [P3],[Red], [ ] and [ ] programmable function keys.Consult your Icom dealer or system operator for details concerningyour transceivers programming.If the programmable function names are bracketed in the followingexplanations, the specific key is used to activate the function de-pends on programming.CH UP AND DOWN KEYS" Push to select an operating channel." Push to select a transmit code channel after pushing [TX CodeCH Select]." Push to select a DTMF channel after pushing [DTMF Autodial]." Push to select a scan group after pushing and holding [Scan AStart/Stop]/[Scan B Start/Stop].ZONE SELECT KEYPush this key, then select the desired zone using [CH Up]/[CHDown].What is a “zone”?—The desired channels are assigned into azone according to the intended use for grouping. For example,‘Staff A’ and ‘Staff B’ are assigned into a “Business” zone, and‘John’ and ‘Cindy’ are assigned into a “Private” zone.SCAN A START/STOP KEY" This key’s operation depends on the Power ON Scan setting.When the power ON scan function is turned OFF;Push to start and cancel scanning operation.When the power ON scan function is turned ON;Push to pause scanning, then resumes scanning after a speci-fied time period has passed." Push and hold this key for 1 sec. to indicate the scan group, thenselect the desired scan group using [CH Up]/[CH Down].