Yamaha MCX-CA15 Owner's Manual page 223

Setting target MusicCAST clients for the MusicCAST
client Timer OFF function.
Carry out the following procedure to set target MusicCAST clients to the "Client: Timer
OFF" function if you assigned this function to a function key in step 5 on page 14.
1
Use u/d to select a MusicCAST client and press SELECT to check/
uncheck the checkbox.
The MusicCAST server targets MusicCAST clients with checked selection boxes
for use with the Client Timer OFF function.
Repeat this step to change settings for other MusicCAST clients.
2
Use d to select "OK" and press SELECT.
The MusicCAST server saves the Client Timer OFF settings.
MusicCAST Version Upgrade 1
Function keys
17