I would like to use this plugin, but it seems that even if a user has permission, they sometimes cannot sort containers because they are either a) not the owner of it or b) not on the team of the owner of it.

I would like to have it where the only thing stopping any player on the server from using the Sort Button would be them not having the permissions for it.

Possible?

I too have noticed this. Also when the owner of the placed item is offline or sleeping, team members cannot use the sort button

Added in latest release