I was testing an oddball variant earlier, and funnily enough even though I had oddball carrier traits set to infinite evade, the oddball carrier could not use an AA. Is there some other setting I need to tweak to allow the oddball carrier to use an AA while holding the ball?
Look somewhere along the lines of," Allowing AAs when holding an objective." It should be in there somewhere.
I don't think you can. In all honesty, with a new minigame i've made recently, you don't seem to be able to use any ability whilst in/holding any objectives. I think thats there to prevent people from running into hills and just using armor lock to rack up more points etc... But either way, unless there's a way to unlock advanced edit gametype features besides sifting through the gametype variants, you cant.