@DJ_A_Diffrance there is not a way to do this within djay Pro AI on its own.
The best way I can think of to achieve something close to what you’re after is to use TouchOSC and create your own touch screen control surface on the iPad. Then you connect the iPad to your Mac wirelessly as a MIDI controller. You could build your TouchOSC screens and controls specifically for Deck 3 and 4.
Check out the post below to get a better idea of what’s possible with TouchOSC:
