Here’s a $20 solution, and what I should have gotten before buying the numeric pad to use as a “poor man’s switch panel” (not knowing what is revealed here). Actually it now comes back to my 81 year old brain that I did try a real switch panel, and ended up returning it as described here.
https://forums.flightsimulator.com/t/affordable-switch-panel/505072
In the meantime I’ve discovered that given all the controllers I have, I don’t need a switch panel in the first place! Us old guys easily get distracted!