I'm looking for documentation / tutorial on how to use the other authentication/login types. (C5.7)
Don' t have access to a google app account to test.

- Do I need to create users first and enable other login types for those accounts?
- Does automatic registration also create a C5 account?
- Can I use groups and other permissions with any of this?

Context: School community with different locations (with own sub-site) each with different groups (and sub-site). They use Google Apps.