Drawer Divsion Dado

Trying to get a foundation library intro prouduction for our company.

A few tweaks left...

I cannot these variables:

variable to turn off the dado at drawer divisions - see attached
How to turn off borings to on the stretcher maybe to attach countertops? - see attached
drawer boxes - the dado for the bottom needs to run completely through... so that the 1/4" bottom is not notched at the corners

Thanks guys