Click the Domains->Manage Domains->URL Forwarding button. This will bring up the Domain Forwarding Management interface.
Enter the Destination URL in the text box provided. This may be of the form domain.com, www.domain.com, www.domain.com/index/index.html, subdomain.domain.com, etc..
Click the Save button.
If you enable URL Masking, then visitors to the domain name will be forwarded to your destination website; however the URL in their browser address bar will remain the same.
For example, your website is hosted at http://demo-domain-name.com and you choose to forward http://your-domain-name.com to this website. If you enable URL Masking, your visitors will never see http://demo-domain-name.com as a URL in their browser address bar.