The Single Arm Lever Row works across your back muscles including your trapezius (traps), latissimus dorsi (lats), rhomboids and deltoids.
First, this is a plate loaded machine so add an appropriate weight for you. Adjust the top chest pad and seat so that both feels comfortable. Take a seat, before putting your feet down lean forward and grab the lever. Then place your feet on the metal foot rest.
Once ready, pull backwards keeping your elbow tucked in, slowly moving back to the beginning position in a continious controlled motion.