Awning on a 2010 Popular 210 Roadtrek

We just got a 1998 Dodge Roadtrek with that same awning. At least with our van, the support bars that attach to the van body are located inside each end of the awning part that you pull out from the awning compartment on the van. The supports swivel out and fasten to those two plastic pieces attached to the van body. Their lengths are adjustable with a round clamp handle on each which locks them at the proper length. There is another adjustable bar that we found stored on the inside of right hand door of the toilet/closet enclosure. This attaches to plastic pieces in the centers of the awning compartment and the frame piece that you pull out of the compartment. It helps keep the awning from sagging in the middle. Our crank handle is attached to the wall next to the toilet. Your set up may be different than ours but this may give you some clues about yours.