I guess I'm a bit confused as I'm on Balmung whose loot rules were already posted in this thread.

Are you saying that on your server the leader gets to lock an item but nobody else does? That sounds asinine if so. As the previous Balmung posters stated, let everyone lock 1 piece of loot that they're trying to get and everything else is greed. Or the primary/secondary plan with primary being locked and secondaries having a max of 2.