I know there's been loads of posts about this, but I never have to do it so haven't paid much attention.

Well, now I do.

I'm in the auto cup scheme but can't make Mansfield so want to transfer my ticket to my mate who is a STH. Is this possible?

I've logged in but only the Brighton ticket is showing. I've had confirmation that my ST has been activated for Mansfield.

Cheers.