Hosting Controller allows you to Add or Delete Host Header Names.
To add a host header name:
Login into control panel as reseller.
Click on the IIS Manager option, present in left frame. In the main frame, existing IIS sites under the logged in user, will be displayed.
Select the site, for which you want to add a host header name, and click on Properties button at the top of the page. Site Properties form will be displayed.
Click on Advanced button at bottom of the form. Enter the new Host Header name in Host Header Settings dialog, and click Add button, the new host header entry will be made to DNS.
Click Close button after adding the host headers.