I always give them the specs I want it set at, never leave it to them, they don't know what's best for your vehicle especially if it is anything other than stock. i say have them set it to -0.5* to -1.5* camber with 0* toe and caster needs to be equal on both side, also check for thrust angle. The camber is determined by how you drive, the more aggressive you corner the more camber you need. There is no right and wrong when it comes to alignment, its something you tune with. Adjusting understeer, oversteer, ect.