The shoulder press machine is a strength training equipment that works the deltoid muscles of your upper arms and shoulders. Here are the steps to use it:
Adjust the seat height so that the handles are at shoulder level.
Sit on the seat with your back firmly against the pad and your feet flat on the floor.
Grab the handles with an overhand grip and push them up until your arms are fully extended.
Slowly lower the handles back to the starting position without letting them touch the stack.