Hammer Strength MTS Iso-Lateral Row Community

I don't know if my waist hurts or my back hurts..

Should we add machine resistance weight or just the total weight of the total plates added!?

Does "both weights" mean the weight on the right plus the weight on the left? Or does it refer to the weight on one side?? Please let me know.

What should I do about the pain in my shoulder?

Chair 1

Chair 5