Although this deals with A&E trim line awnings of that era you may find this helpful.Click to enlarge
Spring rafters go between the PU and awning tube, adjustable 'legs' join the horizontal rafters and awning tube.
Tie it down. Many take 'em down for storms/wind, if I put it up, it stays up! My spring rafter are very tight and takes 2 folks to set up. I put the rubber booted end of the rafter in the bag against the PU.