Sandman,
We were real time typing together. I will pull that manuel soon and check that out. If I play with the command timeing chain, (if it will control volume there, can't REMEMBER) and place a voloume down in a couple of spots, that might do the trick.
My macros are set up where you hit the one button to power up the 1/2/3 main choices. and the same button tapped again powers it all off. (KISS for the kids)If it can volume down, first and last step in the macro, just might....