Hi Marco,
Yes you can set it for Player 1, 2 OR 1+2 which siimply means all your MIDI is the same for both players. I have a couple of MIDI setups which vary for either player so it gives me an instant new set of MIDI parameters. More so for what I am playing on the upper three tracks. Here is the link you asked for.
http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=36187 Marco I strongly suggest you get registered and onto the Korg forums, as SZ is more for general arranger stuff. You could post in the Korg section on SZ, but it's rather, well lets just say, less inhabited than this one

Cheers
Dennis