An area of your website that comes before the domain is known as a subdomain. For instance, the shop part of the URL shop.multiseek.com is a subdomain. For developing distinct portions on your website, such as a shop, subdomains are helpful.
Step 1: Find the Subdomain Application

To create a subdomain on your site, find the Subdomains application.
Step 2: Add Your Information

Add the subdomain you want to use for your website after that. After adding it, you'll notice that Document Root will automatically contain the home directory. If you want, you can alter it.
After you are finished, press Create. You’ll then see your subdomain listed below.