I have never actually tried it but here is how I think it should work based on my experience with the denon and remote so far. on the remote keep pressing the amp button (the one on the lit up part of the remote)a couple of times until zone 2 shows up. click the 'on' button located at the bottom of the lit up screen.

Pick the source you want.

Some where you may need to designate surround b as zone 2, but I am not sure exactly where that happens.

-David