I've been wondering if there's a way to map a specific MIDI button to select an instrument inside a Chain selector. So far and despite all my research, I'm only aware of the regular way to do it, with a knob. The point is, I find it quite tricky sometimes to quickly select the instrument you want, especially in a live situation...
I'd like to be able to assign a dedicated MIDI button on one of my controllers to select one instrument of my rack. Here's a picture to show what I want to do :

Does somebody here know a way how to achieve that ?