Something that confuses me is this found on the Google Developer Console documentation regarding Setting up OAuth2.0
Setting up OAuth 2.0
To use OAuth 2.0 in your application, you need an OAuth 2.0 client ID, which your application uses when requesting an OAuth 2.0 access token. When you register an application in the Google Developers Console, you can generate an OAuth 2.0 client ID.
To find your application's client ID and client secret, and set a redirect URI, expand the OAuth 2.0 Client ID section.
To deactivate the client ID, delete the application from the Developers Console.
How do you "expand the OAuth 2.0 Client ID section" ? Here is a screenshot of this screen:
UPDATE:
Screen shot from "original" developer console interface: