[I cannot set permissions for my friends to edit my objects or see me on the map.]

I know to set the permissions for a friend to track my in SL and Edit/delete objects is in the contacts section.  I have ticked the buttons again and again.  I keep getting questions about if I want to grant the rights and I tick yes.  The permission shows up only for the time span I am online.  Then when I log out, and come back later...it resets itself back to what is was prior.  I cannot figure it out at all.