We are investigating Drupal for our department web site. Right now there is a person or group of persons responsible for each part of the site. When we convert to Drupal, what's the easiest way to give a user or role permission to "own" (i.e. the only ones who can edit that section) a set of pages without giving them permission to edit all pages or to publish pages outside of that area? Is there a module that is set up to handle this sort of "sandbox" model?
Concrete example (we are a department in a university). One of our faculty members is in charge of all the pages dealing with the graduate program. In our current site, this translates to all pages in the /graduate area. He owns all of the files in that folder, and can only publish new content to that folder. Another person is in charge of the undergraduate program (/undergrad), a third person is in charge of the continuing education program (/conted), and so on.
How best to model this in Drupal? Is this something that Drupal is well-suited to handle?
Thanks!