Rotating your cam bolts the same amount front and rear will change the camber only.
Rotating only one cam bolt front or rear will change caster AND camber.
Rotating the front cam out (away from the engine compartment) and rotating the rear cam IN the same amount will change caster. Now in both cases though you will affect the camber some.
The science is not exact. The factory specs always gives you a range + or - and really if you are close to the spec range you are good to go.
As far as a "Close enough,ruff in,till I get it to the alignment rack" I can give you a step by step if you
