In this how-to, you’ll learn how to create a subdomain for your domain name in your Namecheap account.
What catch-all (wildcard) subdomain is: https://www.namecheap.com/support/knowledgebase/article.aspx/320/2237/what-is-a-catchall-wildcard-subdomain
and how to set it up: https://www.namecheap.com/support/knowledgebase/article.aspx/597/2237/how-can-i-set-up-a-catchall-wildcard-subdomain
If your domain name is pointed to Namecheap hosting, you are welcome to create a subdomain in cPanel using this how-to: https://youtu.be/U3g-KNhY_Co
You can read about CNAME record type and how to set it up in this article: https://www.namecheap.com/support/knowledgebase/article.aspx/9646/2237/how-to-create-a-cname-record-for-your-domain
Here’s one about URL redirect types: https://www.namecheap.com/support/knowledgebase/article.aspx/9604/10/types-of-domain-redirects-301-302-url-redirects-url-frame-and-cname
The guide on how to set up URL Redirects is here: https://www.namecheap.com/support/knowledgebase/article.aspx/385/77/how-do-i-setup-url-forwarding-for-a-domain
Finally, you’ll find the full list of host records available for setup within your Namecheap account and the references to corresponding articles here: https://www.namecheap.com/support/knowledgebase/article.aspx/434/2237/how-do-i-set-up-host-records-for-a-domain