Hi Derek,
Yes I basically use the same approach as Mark to obtain multiple splits. For simple sounds (1 voice only) you can then obtain up to 4 segments for each of the Right 1 and Right 2 parts. Alternatively if you use a second MIDI keyboard as a master you can assign the same MIDI Channel to several parts and by editing the range over which each part plays obtain multiple splits with complex sounds.
Cheers
Len C.