I was worried about that
So the Jester desk runs fixtures on LTP, which means the latest command the desk is given is the one that it follows. Depending on your rig, it might be best to have all the LEDS on the same channel, if the lights are RGBD then have them on channels 21 22 23 24 and then program a submaster like they are dimmers. Of course you could change the patch of the desk massively to achieve the same effect .
If you send an email to someone at zero88 they may be able to help you better, but from reading the manual I can't see a way to change the controls to HTP