cPanel offers a feature that allows you to convert an addon domain to a new account.
Please note, this process is irreversible. However, if you create a backup of the original account beforehand, you could terminate the newly created account then restore your previous backup to revert the process.
- Login to WHM as the 'root' user.
- Navigate to "Home » Transfers » Convert Addon Domain to Account."
- Click the "convert" button for the domain that you would like to convert to an account.
- Select your desired configurations for the new account.
- Scroll to the bottom of the page and click the blue "Start Conversion" button.