You can redirect the subdomain to another page using the steps mentioned below:
Step 1: Login to the cPanel. In the Domains section, click the Subdomains icon.
Step 2: Under Modify a Subdomain, click the Manage Redirection link to the right of the subdomain you wish to redirect.
Step 3: In the text box, type the URL to which you would like visitors to be redirected which they browse with the subdomain and click Save
When you visit the subdomain, the page will be redirected to the specified page.