Still trying to figure out how to get the volume down or up with the voice commands. I realize, of course, using the steering wheel volume button is appropriate, but I can't seem to "teach" the command center "person" to learn "Volume Up" or Volume Down". I realize there's a list (somewhere) of voice commands, but how to "teach" the command center "person" has escaped me so far. Anyone's help (without going through 3 or 4 pages of Owner's manual instructions) would be greatly appreciated. Thanks!