There are four different permission levels in TerminalFour: Contributor, Moderator, Power User and Administrator.
Users are automatically added as Moderators.
Contributors can make and save changes to content. Contributors can't publish to the web or delete files - all their saved files are marked as pending and need to be published by Moderators, Power Users, or Administrators.
We currently do not have any contributors
Moderators can create sections, save changes, and delete sections and files.
Most users are moderators.
Power Users can create sections, save changes, and delete sections and files. In addition, they can also access particular content types for code and scripts. Power Users can also add users to permissions groups.
Administrators control sites, manage users and user permissions, reports, controls, developer tools and content type administration, and can change the site's configuration.