If you want to use more than one domain on your web hosting installation, you must use add-on domains. They enable you to manage several domains from a single user account.
Note that you’ll first need to purchase a domain from a registrar.
Step 1: Find the Addon Domains Application

Find and open the Addon Domains app in cPanel.
Step 2: Add Your Information

Add your domain and any potential subdomains now. Although the document root will be filled in automatically, you can choose to modify it. You can also choose to create an FTP account that is associated with the domain, making it easier to manage its files.