How do I assign a computer keyboard key (e.g. “Q”) to a channel on the Midi-Gate module to trigger a gate? (VCV Rack 2.5.2 on MacOS 14.5) When clicking on the display for a channel “–” appears and I can reassign the note. However, I cannot reproduce assigning a key like in YT video “Playing the Turing Machine Live in VCV Rack using the Computer Keyboard” by Omri Cohen. Could only find a hint to the “LRN indicator” in the user manual which is also shown in the video.