Is it possible to add something like this so that patrol locks to the player/team that has done X amount of damage to it?
It should be so that others can't damage it as long as that player/team has aggro on it

I think this setting in the config does that already:

Unfortunately it doesn't.
We have tested it and even though patrol locks to a player/team it is only locked in that way that the crates patrol drops only can be lootet by that player/team.
others can still do damage to patrol.