Using this module, users can directly log in or register with their Google credentials at this HumHub installation. A new button "Google" will appear on the login page.
Please follow the Google instructions to create the required OAuth client ID credentials.
Once you have the Client ID and Client Secret created there, the values must then be entered in the module configuration at: Administration -> Modules -> Google Auth -> Settings.
This page also displays the Authorized redirect URI, which must be inserted in Google in the corresponding field.