If the pool has a main drain open that and close the skimmer valves. Make sure the water level is halfway in the skimmer port.

Set the multiway valve to bypass the filter, and start the pump. Once you see water coming through the pump basket lid, slowly open the skimmer valves until you see no more air in the pump basket.

Slowly close the main drain, and you should then be running on the skimmers.

Lastly, shut the pump down, and set the multiway valve to send water through the filter.

Hope this helps.

Pat