To create a Parked Domain name (Domain Alias), please login to your client area first, select the hosting account you wish to manage and lastly select the Parked Domains section as shown in the image below:
On the next page, click on the plus (+) sign and complete the form. Do not forget to update your domain nameservers before parking your domain.
Enter the Domain you wish to park on your account, and select the 'Parked On' domain or subdomain where the new domain should point to.
Click "Create" and you are done!