As far as I know, Full or AI is the only method of triggering from locations other than below the split point. However, there is one exception--you can move the split point to the extreme right hand side of the keyboard, then trigger chords from any location when playing in the fingered mode. Keep in mind, however, that you will then have to play single or two-key melodies using the left voice. If you were to hit three keys, you would change chords.
Good Luck,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)