Run the InitializeOAuth choreo, specifying the Client ID from the app you registered at Amazon and the desired Scope. The InitializeOAuth choreo will return an authorization URL and a callback ID (required for the FinalizeOAuth step).
Open a new web browser, navigate to the authorization URL returned by the InitializeOAuth Choreo, and click "allow" to grant the app access to your Amazon account.
Run the FinalizeOAuth choreo, specifying the callback ID returned earlier by the InitializeOAuth choreo, to obtain an OAuth access token that can be used to access Amazon.
Note: When using these Choreos to to access the Amazon Cloud Drive API , you'll need to whitelist your Client ID by completing the Amazon Cloud Drive whitelist request form.