Co Owners

Currently a Co Owner may Unlock an item which is locked down in a house. But, they cannot Lock anything down. This might cause a conflict if the owner is not around to ReLock it.
Perhaps a Co Owner could be allowed to Lock something down and Unlock that item. But, the Co Owner cannot Unlock anything that the Owner Locked down.
The Owner would be allowed to Lock or Unlock anything he chooses.
Perhaps a Co Owner could be allowed to Lock something down and Unlock that item. But, the Co Owner cannot Unlock anything that the Owner Locked down.
The Owner would be allowed to Lock or Unlock anything he chooses.