1. Update Nameservers:
   Before proceeding, make sure your domain's nameservers point to the server where you want to use the addon domain.
   Click here to learn how to update nameservers

2. Log in to cPanel:
   Click here to learn how to log in to cPanel

3. Navigate to the Domains Section:
   In the cPanel dashboard, click on the "Domains" option.

4. Create a New Domain:
   Click on the "Create A New Domain" button.

5. Enter the Domain Name:
   In the field provided, type the name of your new addon domain.

6. Document Root Settings:
   Important: Make sure you untick the checkbox for the option "Share document root"

7. Submit the Domain:
   Finally, click Submit to finish the process.

Once done, your addon domain will be added to your cPanel, and you can manage its content and settings from there.