England Supporters Club

I’m intending on applying for myself and my son together for euro tickets for all games. If I tick the box to say I’m willing to be moved up or down a category, and pick cat 3 for all Wembley games if I don’t get cat 3 I’d get cat 2 . I’m on 24 caps my sons on 32,so there’s no problem there for tickets . What’s the best option for last 16 & q/f if I select cat 2 as my first choice would I be moved up or down does this improve my chances as I could get cat 3 or cat 1 .or can I only be moved 1,way ?? Or would I be better selecting cat 1 where I’d be moved down to cat 2 if there available and Less people on higher caps would apply for cat 1,just need to know best way to improve my chances