On the high bar squat, the bar is placed on top of your traps. (getthisstrength.com)
When you have the bar on top of your traps, it's better to break at the knees. (getthisstrength.com)
Stand straight with your feet approximately shoulder width apart, if you are using dumbbells place your hands down by your sides with palms facing in to your body, if you are using a barbell this should be resting on your shoulders andthe top of your traps with your hands supporting the bar. (fitbodyhq.com)