You have two domains yourdomain.com and your-other-domain.com. While yourdomain.com is the domain of your website lets say you want to add your-other-domain.com. You want both domains to go to the same place. In other words, when someone types either yourdomain.com or your-other-domain.com they will go to the same page(s) on your website. In order to have additional parked domains you need to purchase them and then park them through your CPanel after you purchase them.
- You can purchase a domain to park through this link
To park a domain:
First purchase the domain then configure the name server (DNS) to point to your current domain's server.
- Log into your CPanel
- Click on Parked Domains under the Domains section
- Type the domain you want to park in the "New Domain Name" box
- Click Add