You have the ability to create subdomains in cPanel. Sub domains function separately from your main domain. Let’s go over an example. If you have a forum for your site, you could create a subdomain called “forum” – and the address would be “forum.example.com”
Many people use subdomains for mobile versions for their website, forums, blogs, and stores. Subdomains are easily created in your cPanel. Let’s walk through setting up a subdomain.
Step 1. Login to your cpanel
Step 2. Go to the Domains section and click on Subdomains.
Step 3. Type in the name of the subdomain and select the domain to create it under. It will automatically create a folder for the subdomain in your public_html folder.
Step 4. Click the Create button. You will then see a message stating it "has been created."
NOTE: It can take up to 24 hours for a new Subdomain to show up on the web
