Lock and Unlock feature: The lock feature should be set so that when the Person A locks a file so that they can work on the file, it should prevent the others listed on the Share from being able to Unlock the file. It defeats the purpose of locking the file if someone else can just unlock it while Person A is still in the midst of editing a file. The only person outside of Person A who should have the option is the Owner and Co-owner of the Box folder. All others like Editor, Viewer etc, should NOT be able to Unlock a File locked by Person A.