README explanation falling short

The README explanation is too simplified to make sense for those unfamiliar.

Under WhatsApp Cloud API Configuration:

Open the applications section in the AWS console. Pick the name of the deployed application.
Copy the endpoint URL and add it to the webhook WhatsApp configuration, append the path /cloudapi.

What's the applications section? What is meant by the webhook WhatsApp configuration?

aws-samples / amazon-connect-whatsapp-chat