OK, I've been looking some more and you can't change "group" to anything else, it has to stay "group" which is the labels at the bottom of the ribbon (I know I'm not telling you anything you don't know, lol...just talking it out).

So in reality, I only need one "group" with several drop downs similar to the "conditional formatting" button on the Home tab, would be ideal.

One button would say "Area Calculators" with all of the actual calculators listed below...another for "Volume Calculators" with calc's below, and so on.

I guess there's really no question here, per se. Just getting all these thoughts down before I forget .