- Login to cPanel.
- Locate and click on the Addon Domains icon under the Domains category.

- Enter the required information:
- New Domain Name: The domain name of your account.
- Subdomain/FTP Username: Create a login name for the new domain.
- Document Root: Folder within the master domain's root directory to hold files for the new domain.

- Click the Add Domain button to create the addon domain.
Note: This will only work if the Addon domain's DNS servers are set to the same as the master domain's.