1. Log into your SiteWorx account. (eg: www.example.com:2443/siteworx/ )
2. Under "SiteWorx Menu", click the "Hosting Features" menu item if it is not already open.
3. Click the "Domain" menu item and then click on the "Secondary" option.

4. Under the "Add Domain" tab, enter your domain in "Domain" field (e.g. example.com).

5. Click the "Add" button.
You should see a success message notifying you that your secondary domain has been added.