Create Loop and stop when done

I have figured out how to everything but the loop part. I cant figure it out how to have it stop the loop when there are no more "Burn" validation drop down menus.
And, Im sorry but i dont understand what those program lines are trying to do. Is there anyway to explain them to me?

I have uploaded an updated one. It now has clearing the validation menus after use and continuing to "Equipment" after "Burn"