Side stops go on now, mount the side stops to the rail to set the distance from edge to your first row
of holes. I will line up the rail/end stop to the "Top" of the cabinet (on the left in the picture below).
Clamp the rail and the work piece down to the MFT, now remove the side stops, they will get in the
way of drilling the holes. Here it is from below, very important, make sure you put the end stop up
against the end of the work piece.