It's still pretty easy. In default LOCAL mode the instrument is set to transmit on channel 1, (if I remember correctly you see a sound called 12 String Guitar on startup). Just go to PERF TRACKS page 1 and disconnect the LOCAL sound block. Then press MIDI IN and make sure its in MULTI mode. These will be your 16 recieving tracks. That's all there is to it. Everything defaults to using MIDI IN and OUT #1.

Let me know if anything's not clear.

Chris