How to Add On New Domain Name (OLD)
1) Login to your Control Panel (cPanel) account with your username and password.
2) Select "AddOn Domains".
3) Enter your domain name details (without http://) and your preferred password for the new add on domain.
Remember to hit the "Add Domain!" button as shown below.
Note: The domain name must be configured to point to the correct Domain Name Server (DNS) first.
4) To confirm that the addition was successful, return to the “Add-On Domains” page and see whether the new domain is listed as shown in the image below: