Create personal menu from users non admin on sub-site it's possibe?

-I have intalled Drupal 6 on Multiple install ok
-I have replied my site with same menu on my 10 sub-site ok
-Now i want 1 user for every 10 sub-site that modify contents of existing menus and have privileges for create new menus but that not modify default structure of my pre-installing. Is it possible??