Important: Many hosting providers doesn't offer creating new subdomains. We at Webhosting1st are offering unlimited subdomains for all Your domains.

1. Log in to Your DirectAdmin (how to do it check HERE).
2. If You have more then 1 domain, click "Home" and click domain, for which You want to add new subdomain.
3. Click "Subdomain Management"
4. Enter Your subdomain in "Add Sub-Domain" field and click "Create".
5. You can now put Your files for Your new subdomain in /domains/yourdomain.com/public_html/yoursubdomain

Webhosting1st is offering reliable and cheap web hosting, prices are starting at just $10/year, for more details please check our plans.