Step 1: Go to cPanel and click on the Domains.

Step 2: Click Create A New Domain.

Step 3: Enter your subdomain (e.g., blog.example.com).
Step 4: Uncheck “Share document root” if you want a separate directory for the subdomain.
Step 5: The system will automatically create a root directory (e.g., /public_html/blog).

Step 6: Click Submit.