With leg pads in upper position, sit on seat and place feet on lever platform with legs under pads. Lower leg pads on legs so they are snuggly adjusted just behind knees. Place hands on top of thigh pads.
Push lever platform down by extending ankles as far as possible. Return by bending ankles until calves are stretched. Repeat.
This machine design is very rare in comparison to Lever Seated Calf Raise machine. This particular machine was missing its adjustable leg pad so fists were placed between legs and cross bar. Movement is predominately Soleus. Gastrocnemius are in active insufficiency since knees are significantly bent. See Calf Exercise Analyses.