You can simplify access
                  control management by creating a folder structure that reflects the
                  access distinctions that you want to make. Instead of setting permissions
                  on each individual item, set permissions on the folders. The items
                  in a folder inherit the folder's effective permissions.
               
 
               Tip
To protect the folder structure,
                  do not grant WriteMetadata permission on a folder to someone for whom
                  WriteMemberMetadata permission is sufficient.