Obtain OAuthorization 2.0 credentials from the Google API Console by visiting the Google API Console to obtain OAuthorization 2.0 credentials, such as a "client ID" and "client secret" that are known to both Google and your application. Copy and paste this information into your branding screen within the platform.
Note: Make sure you specify allowed URLs in the client configuration:
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Office 365
Register the new application following this guide:
https://docs.microsoft.com/en-us/azure/active-directory/develop/quickstart-register-app
Note: Make sure your URL is set to 'https://custom.domain.com' and single-page application type
Note: make sure you have Implicit Flow enabled in the Azure portal:
Copy and paste the application (Client) Id and put it into your branding page.