To enable OAuth, you will need to use an administrator account to navigate to Admin Menu > Site Configuration > Authentication and choose either “Google OAuth Authentication” or “Username and Password or Google OAuth Authentication” from the “Authentication Mode” drop-down menu.
When you sign-in via the “Sign-in with Google” button, OAuth will try to match your google email address with a Manuscript account. If your email address doesn’t match an account in Manuscript or if there are multiple Manuscript user accounts with the same email address, authentication will not succeed. We recommend switching to Username/Password and OAuth temporarily before switching to OAuth-only, just in case there’s an issue with signing in with Google.
If you have set up Self Registration and a new user has a Google Apps email address with a valid domain, they can automatically sign up for an account. OAuth can also be used in combination with two-factor authentication.