IA Mode can be done using an IA button with CC Link:
- Create a device in the Devices page to represent the other controller. Set the channel number to the channel that incoming messages will be coming in on.
- Create an IA button. Turn off all checkboxes except CC Link, which should be on
- Add two actions to the button:
CC Toggle #x off:0 on:127
System / IA Mode
"x" can be any CC number except 0 or 32. When a CC message comes in with CC number "x", it'll turn the button on or off, and will turn IA Mode on or off accordingly.
There currently isn't a way to cause a bank up or down using an incoming message, unfortunately. We would need to write some code to create System / Bank actions (which is possible, but not on the near term to-do list).
You can use external momentary switches to act as additional buttons - that would be easier that using the MIDI approach.