Choose Multimode
Select system / multi edit button
Scroll through this menu until you get to MIDI channel - set to MIDI channel 1, then press the part button - selecting part 2 and press the system / multi edit button again, scroll through and set MIDI channel to 2 and so on. Select your patches for each part aswell using this menu.
Now you should be able to scroll through each part using the part button and control each patch separately with the knobs e.t.c.
If you want to layer patches so they play at they play together, for example set part 1 and 2 both to MIDI channel 1. In Logic then the 2 patches will play together because they're transmitting on the same MIDI channel.
Hope this helps.
