A good staffing tool enables you to justify "over" staffing--"Well, nursing office bimbo, we have 3 p-ops, one going for heart surgery, one on ECMO, and L&D's full of preterms, so, yes, we're kinda overstaffed." High maintanence parents can count higher, so can babies w/drawing.
We were handed a staffing tool from the PTB, totally adult. We figured out [eventually] how to fit our "square" babies into their "round" categories. It wasn't pretty, but.... we did it.
Of course, sometimes, you finally get the tool to work, and they change it.
Be careful you don't have nurses over valuing the babies. You need to be able to justify how you get the numbers!!