you can't really rent a point. you can only rent a reservation.
if i rent a
DVC reservation to you (as a DVC owner or non-owner), i still own the reservation and can modify or cancel it as i choose.
if i transfer pts to you (only if you are a DVC owner), then the pts are yours to use as you wish (subject to their retained home resort and use year status.) there is a limit of one transfer per year.