Grab the bar with your hands just lateral to your hips. You may want to use wrist wraps if the weight is excessive.
Start the movement by flexing first at the hip lowering the weight to your knees. Once the bar is at your knees this is when you bend your knees until the plates touch the ground. From the ground spring back into a standing position by thrusting your hips forward. End the movement with your pelvis in a posterior pelvic tilt and neutral spine