Lock chromatic keyboard octave to a midi track?

I am triggering koala sampler on ipad from my digitakt midi tracks. I am using the chromatic keyboard to trigger the koala pads. I was hoping to lock the digitakt chromatic keyboard to different octaves for each midi track so i could easily trigger different koala sampler pads.

Its seeming like digitakt wont allow locking the octave for the chromatic keyboard to a specific midi track. Anyone know of any workarounds? maybe its a feature request?