Be in a strong athletic position: knees flexed, core and glutes activated, chest up, and shoulders back.
Place your fingers on barbell. Step one foot underneath the bar and with the same arm, assume a front rack position with your hand and arm, pulling your elbow up under the bar.
Repeat on the opposite side
Triceps should be parallel to the floor
If you don't have the mobility to assume this position, attach wrist straps to the bar. Perform the same movement but grab the straps instead of the bar.
The barbell is resting in the crevice between your delt and collarbone with your elbows up and fingers underneath the bar.
This may feel uncomfortable if you are new to front squatting.
Your feet are positioned in a slightly narrow stance (compared to your normal squat stance) and feet are turned out slightly.
Keep your front rack position in place, screw your feet into the floor, and core tight then unrack the bar.
Descend into the bottom position. Try to get more range-of-motion than you normally would on a barbell squat variation.
Once you reach the bottom position, accelerate back up driving your feet through the floor.
Squeeze your glutes at the top position.
*Tips*
This variation, because of the machine and your setup, will be more quad intensive.
Be aware of the fixed bar-path before you squat.
Always look straight ahead, never look directly up or down. You want to maintain a neutral neck position.
Don't overextend/arch your back. Focus on core tightness and a neutral spine.
Don't bounce out of the bottom, control the exercise through the full range-of-motion.