Hi, Tublencico,
You need to create more outputs!
On the Output panel area in Kontakt 2-
Click "Add Channel"
Click "Conf." on the new channel
Set the physical outputs for channel 1 & 2
Click "OK"
Repeat to create more stereo outputs, I have 16 stereo outputs setup on mine wired to an Audio Instrument and 15 Aux Instruments in Logic, that way I can control 16 instruments on 16 MIDI channels in Logic. I also have a Multi Instrument wired to the Audio Instrument, both of them set to MIDI "all." The Aux Channels are set to MIDI channels 2 thru 16. The only problem with this setup is I need 2 tracks in the Arrange Window for each separate Kontakt instrument. One to hold the MIDI information and one to do the track processing.