Assigning domain to new account:In this case assigning domain name to account works the same way as creating sub-domains in WHM.
- Go to "Create a New Account"
- Enter domain name (make sure it existing one, WHM will not register domain for you)
- Enter username, password for account
- Enter package (hosting plan), and contact email
Assigning domain to existing account (creating "Addon" domain):- Go to "Addon Domains"
- Type domain name without the http://www. in the "New Domain Name" field
- Click "Add Domain"