Just for kicks, here's one more stab at a layout without the meters that apply only to the 2K.
Having the three meters lined up seems to make sense, and to do that I moved the input and output related buttons to a single row.? I played with colors a bit too, but that was mostly so I could learn how colors work in Node Red.
I think I'm going to stick with this one for the time being... I find it to be fairly intuitive.
73,
?Frank N6OI
Frank N6OI