The Contact Points option lets you add, edit, and remove contact points, and send test messages to any contact point. If you set up mobile alerts, you must choose one or more contact points.
You can have only one primary contact point, which is the registered mobile phone number of your account. You cannot modify or remove the primary contact point; however, you can register more than one mobile device, fax, or e-mail address for the same account, or across multiple accounts. Joint account owners can customize alerts and other features for their devices.