Setting up a subdomain is very easy.
* Login to your cPanel
* In the Domain section, click the “Subdomains” icon.
* In “Subdomain” type in the name you would like to be your subdomain. In the drop-down menu choose the domain name you would like to add this subdomain to.
* A Document Root will automatically be created for this subfolder in the public_html folder. You can change this if you want.
* Click “Create”.