Sit on machine with chest against pad. Grasp parallel handles with thumbs up at shoulder height. Slightly bend elbows and internally rotate shoulders so elbows are also at height of shoulders.
Keeping elbows pointed high, pull handles apart and to rear until elbows are just behind back. Return and repeat.
Keep elbows raised at same height of shoulders to minimize Latissimus Dorsi involvement. Thumbs down grip may be used so shoulders more naturally assume height of shoulders. Some machines allow for a more neutral overhand grip.