Position your feet close together in the center of the pad.
Keep your heels flat and lower the machine under control until you reach a 90* angle. It’s not necessary to go any deeper on this exercise.
Lift the weight by pushing your heels into the pad hard, and don’t lock you knees.
TIP: The foot positioning here will emphasize your quads as the primary drivers of the movement. However, given that your hamstrings and glutes are your “power muscles” and we are reducing their ability to help, you should expect to use a slightly lighter weight when performing the leg press this way.