Any group can be assigned default site wide rights. These are abilities that the group has across the entire web site by default. At any time you can assign a user or group to an object to override these defaults.
Managing rights is a quick way to provide basic default rules for a group and any users assigned to that group.
For example, in this groups site wide rights profile they are able to edit content but not publish. The Interns Group is also able to add and edit events, but not delete them. They have been given no default rights for the navigation objects.
Remember that site wide rights are the default rights. Any user or group can be assigned to an object within Savvy and that specific assignment will override the site wide rights for that object. For more information about how rights are managed when a user, group or site wide rights may conflict see the Rights Hierarchy page.