I needed this for a last minute zoom interview. I actually didn't use it on a chair, I used a command hook and binder clip to hang it from the wall behind the couch. The pocket on the back that is supposed to accommodate a chair is not that big, so make sure you check the measurements if you're planning to use it that way. It worked fine, and I didn't have any trouble folding it back up and getting it into the bag, but I do have a few things that fold up like that so I'm used to the process. If you're not, YouTube is your friend.
(FWIW, it turns out that I didn't actually need this for Zoom, the software does a really good job of blocking out the background without using the green screen technology. However, I have another one coming up on Microsoft Teams and I don't think their software is as good.)