What Joe said. With a couple extra things.
I bought a 10' fresh water hose and cut it in half at an angle so it doesn't try to block flow when sitting on the bottom of the antifreeze bottle. One end I can use for the winterizing. The other I can use for the fresh water fill tube if I want, although normally I just use the Power Fill feature.
When I connect the hose to the freezeguard connection and put the other end in the antifreeze jug, I set the antifreeze jug inside the adjacent basement door so the pump doesn't have to lift the fluid as much.
I also sometimes have to open one or both of the low point drains after I turn on the pump to get flow started. Also, if you have trouble getting flow started, make sure your hose connection to the freezeguard connection is good. I sometimes have trouble getting it good and tight and the least little gap will allow air in and no fluid flow.
After starting the pump and getting flow thru the faucets, watch the jug as it can quickly empty a gallon jug of antifreeze and start sucking air.
If you have a Splendide washer/dryer, here is the Splendide Consumer Tips
detailing how to winterize the washer.