Embedded Credentials
Authenticate using the Embedded OAuth Credentials
Desktop Authentication with the Embedded OAuth App
You can connect without setting any connection properties for your user credentials. Optionally, set AuthenticateAsPage to the name or Id of a page you manage to make requests as a page.
When you connect the add-in opens the OAuth endpoint in your default browser. Log in and grant permissions to the application. The add-in then completes the OAuth process.