Unanswered cant intitiate auto leveling calabration

Ok I am very lost. My 3d printed objects do not match up with my dimensions. I have the latest matter control software (1.30) and i don't get the option to auto calibrate. like you guys say with a piece of paper. i cant find the option in the software to initiate this auto calibration sequence.i have my settings on advanced, and i have tried removing and forgetting the printer and reinstalling everything and redoing it yet still no self calibration sequence is initiated. halp im the owner of a R1. Please please help me wizards.