On a side note. I do not seem to have access or know how to initiate that menu that you show in your example... How do I access or install that separate menu...
I do have one for the Fredotools, but not the Fredocollection.
@Dave-R Got it! Thanks Dave...it did seem like overkill to lock both the viewport and the layers, but it seemed like one of my viewports was shifting (even though camera positions weren't changed) and I thought maybe I had been double-clicking into the viewport(s) w/o realizing it. Still not sure what I did, but it seems to be working now.