*After* you create your image plane. You will see "placement extras" open up. Toward the bottom in *Center __ __ __ * is x,y,z. Then look at the image planes in perspective. You will most likely have to size one or the other so both images match. You do this with Width or Height I forget think it's Width. When you get comfortable with it create a new set of camera views. Duplicate the image planes & you can have a set centered at 0,0 and a set split (one behind the modeling object & the other to the left). Go for It