From the home screen of MyFrontpoint.com
Click on the Notifications sections on the menu options on the left side of the screen.
Click on the notification you would like to edit.
Click the Add Recipient button. If the desired recipient has already been added to your address book it will be listed here. You can click on it so a check appears next to it
Click the Close button.
If you wish to add a new phone number or email, click on the +New button and fill in the information to add it to the list. Make sure there is a check mark next to the method you added.
Click Save when done.