Excuse me if I misinterpret your question... If you open the editor of your drum sample (far right top of the sampler) you will see it is broken into groops. The groups are on the left. Open a group and you will see channel outputs for them near the bottom. I cannot recall if you can change the midi, sorry but I am betting you can. To use this as multichannel you must load it into your channel strip from the multi instrument drop down. You can isolate samples or group them together, send them to different mixing channels, sends, buses etc. I send them to aux channels and then group them accordingly in the mixing environment for more control. I hope that helps a little. I am pretty green but I like to do this with a jazz drum kit I have for the EXS.If there were a way to post my autoload song I could just send you that to look at. I've got it all set up for Kontakt and the EXS for multi channel output. Good luck