We've now seen what types of users are present in the default setup of Joomla! 1.6. The action permissions that you can grant these user groups—things they can do on the site—are shown per user group in the Site | Global Configuration | Permissions screen. Click on any of the user group names to see the permission settings for that group:
You'll also find these permissions (such as Site Login, Create, Delete, Edit) on other places in the Joomla! interface: after all, you don't just apply permissions on a site-wide basis (as you could in previous versions of Joomla!), but also on the level of components, categories, or individual items.
To allow or deny users to do things, each of the available actions can be set to Allowed or Denied for a specific user group. If the permission for an action isn't explicitly allowed or denied, it is Not Set.