Hi , yes the standard pdq and the portaporch both can stay on the awning rail, they are stowed in their own zipped bag which is held in place on the awning rail by two grub screws one at each end to stop it sliding about.If you want to use a full awning then you need to remove the pdq or you can have a second awning rail fitted below the original in the appropriate place to accomodate the pdq.This was one of the reasons why we have decided to part with ours, it seemed like a good idea at the time, but in practice ???.