Locate the release lever on the right side and turn it clockwise. When the lever is pointing up, the roller is locked in place. When the lever is pointing toward you, the roller bar is raised and the rollers are ready to be adjusted.
Grab the roller in one hand and hold the roller bar in the other. Twist the sliding roller so the pinchers are NOT in the notches.
Slide the roller to the desired media size and twist again to lock the pinchers into place. There are four grooves your roller can sit in: A4, letter, 12”, and 13”.
Once you have your roller adjusted, twist the release lever to the upright position to lock it in place.