2) Log into cPanel
3) Click on "Addon Domains":
4) Enter the domain name in the New Addon Domain field. If your new domain is www.newdomain.com, enter 'newdomain.com' in this box:
5) The username, and FTP directory should fill in automatically:
6) Enter a strong password for the new ftp user, then click to add the domain:
7) Give the system some time to complete the request, then click to return to the menu:
8) At this point, you may upload content to the new directory.