I have used this layout along with the sampler BS16, sometimes with Mainstage.
The goal is to play the chord in live performance, with instruments Organ / PAD.
Enjoying the contact, I would like to say that I found the mididesigner the most, accomplish my goal, but while editing the designer it crashes sometimes, terminating the program unexpectedly.
And as for this specific layout, the program behaves strange when carrying out the jump page via the button, which is also associated with a transposition of notes.
notice that it jumps into a random page, and after 1 second and jumps to the correct page. You can fix this?