You can add more than one domain to your website; to work all on one account.
1- Login to your control panel (cPanel).
2- Choose (Aliases) from (Domains) block.
3- Type the new domain name, then press (Add Domain).
Note: If you have virtual or dedicated server and use Dimofinf DNS, please open a new ticket directed to hosting department with the domain name to be added to Dimofinf DNS Cluster.