1- Select an appropriate weight and sit on the machine grasping the handles.
2- Now inhale and raise the the weight until your forearms are just above parallel.
3- Exhale and lower your elbows back down to your sides and repeat the movement for your desired results.
Tips and advises:
1- Make sure to perform the exercise within the full range of motion
2- And that the back of your forearms are touched with the pads on the machine.