READ : Allow user to view this Timeline
CREATE : Allow user to create new resource below this Timeline
UPDATE : Allow user to edit this Timeline
DELETE : Allow user to delete this Timeline

Resource has permissions :	READ	CREATE	UPDATE	DELETE	Action
ls://dev.artenum.com/projects/frida/member					Edit -  Delete -  (recursive)
ls://dev.artenum.com/projects/frida/manager					Edit -  Delete -  (recursive)
ls://dev.artenum.com/projects/frida/reader					Edit -  Delete -  (recursive)

    (owner has all permissions)