I am not at my NLE to retry this, but I had a thought and question for David…. how does your Program or Source Window know which Monitor to control with “JKL” ???
If I use it from the Timeline it controls (displays in)the Program Monitor(s) and I do this all the time but how does one focus the “JKL” control to the Source Monitor? I use the arrow keys to achieve that so its no big deal. ( I am just curious)