The grill lifters are used to lift or move the grill which is helpful if the grill is dirty or hot. The lifter needs to run parallel with the top grill rods. With the lifter on an angle, line up the slot in the lifter with the center support rod that runs under the grill. Move the lifter to one side of the grill and lower the lifter so it passes the top rod and lifts so the top rod sits in the trough of the lifter. Repeat with the other lifter on the other side of the grill. Remember that grills go in and out from the sides.