Thank you for the order.
To add another website to cPanel or how to add a domain?
When you login to cPanel, search "addon domains", or scroll down to find the feature.
After adding a domain, you must change the DNS on your domain registrar and point to our server as I sent to you via the attached doc plus all the relevant and extra info you can handle well of your cPanel account.
You can also search the question you have by typing your question on the YouTube searc