Hi! Can any tell me the correct way to set my valve so both the skimmer and main drain are open? We have a spa and pool combo. Please Correct me if I’m wrong but the spa valve is on the far left and is currently closed. The far right is the main drain also closed and the middle is the skimmer which is open. But how do I set the valve so the main drain and skimmer are both open? Do I turn the handle facing up?