New equipment at the gym!

The Planet Fitness I go to has added a Hack Squat, Supine Press, and Seated Calf Raise from Matrix to the floor last week and I have been starting to integrate those into my workouts. Most of the equipment I have a good idea what the weight I’m working with it there, other than the calf raise. How much of my body weight do I factor into that particular lift? The hack squat is pretty obvious, but not sure about the calf press. Thanks