My fault, I was stupid. When I got my ticket I just clicked on "best available" and now I have a seating ticket!

It is for Edinburgh Usher Hall. What I want to ask is is it still possible to switch and just go to the standing area??? Or not??

If not, would it be possible to swap my ticket with someone who has a standing one?? I really don't want to see Morrissey seating :/

Thank you!