I just use the pump. First I hook up the pump and turn the multi port valve to waste. Then I remove the return plugs and install eye balls. Next I remove the plugs in the skimmers. Next ( prime the pump) stick garden hose in pump basket and turn on the water and fill the pump. when the pump is full of water, close lid, turn pump on, the pump will start sucking in water that fills the lines and goes directly to waste. Bam that's it, you will see the red antifreeze come out from your backwash hose first and then turn clear.
Also on the valve that controls the drain and skimmer , I put it in the middle so its sucking both from the drain and skimmers.
After its running clear out of the backwash hose, turn off the pump, turn multi port valve to filter and turn pump back on.