External MIDI Modules - Program Changes and Accessing other Sections within the Module

I have a Korg X3R. It has an A section, a B section, and a G section with sounds in all of them. I have managed to get my program changes working with Playing techniques, Playback techniques and Expression Maps. But I am not sure of how to make my module switch from the A section to the B section. The A section has sounds assigned to A00 to A99 just as the B section has sounds assigned to B00 to B99. The G section represents General MIDI with sounds from G01 to G135. Do you have any suggestions that would get me on the right track to accessing these other sounds? Thanks a million.

The key to your Korg’s A and B sections would most likely be found in the Korg manual rather than any Dorico resource.

Yes Derrek I can see those sections in the manual. In Finale I was able to use a control key to change the module to the desired sections. I believe I could be missing something with Dorico when it comes to Expression Maps. I’m sure eventually I will stumble across the code I should set up but as for now, coming to the forum is the quickest way for me to get an answer. So I am now very familiar with Playing Techniques, Playback Techniques and Expression Maps. I have successfully performed the program changes on at least seven MIDI channels. Now all I need is the proper code to get to all 327 sounds without manually changing the module. I hope that made sense. And thanks for the tip about the Korg manual. I will double back and see if I missed something.