Drupal allows for a lot of control granting access to edit content on the site.  The Illinois Framework comes with a role called Content Manager which is intended to be the primary role to edit content.  We will routinely update the permissions on this role as new content types and functions are added.  If you wish to create your own role for content editors, consider creating a new role.  Prefixing it with your unit may be a good idea in order to keep it separate from the roles that come with the framework.