A subdomain is a subsection of your website that can exist as a new website without a new domain name. Use subdomains to create memorable URLs for different content areas of your site. For example, you can create a subdomain for your blog that is accessible through blog.example.com and www.example.com/blog
2) Select the "Subdomains" link under "DOMAINS".
3) Enter the Subdomain, and Document Root, and push "Create".