Same as Logged In, plus can see secrets (except GM-only secrets) for their own PCs and edit any character for which he or she is assigned as the player.
Same as Assistant GM, but cannot see or edit secrets. Exceptions: see "Player" and "Insider"
Insider
For when you want to share secrets of a single page with just some players. Insiders of a single page can see the page if it is a secret page, and its secrets section. Like Assistant GM, but for a single page.
Same as Player, plus can create, view and edit pages within the campaign, including
secrets (except GM-only secrets). Can also assign players to individual characters.
Gamemaster
Same as Assistant Gamemaster, plus can delete pages in the campaign (and even the entire campaign at once). Can see and edit GM-only secrets, can assign Assistant Gamemasters, and can update silently (to avoid spoilers).