A subdomain is a domain that is part of another (main) domain. For example, if a domain offered an online store as part of its example.com site, it might use the sub-domain shop.example.com
We then approach the new window that will open in front of us
If we want to create a new subdomain we will click on the button on the left at the top which is called (Create subdomain)
Now we will enter the name of the new subdomain that we have chosen, click on the contact button and you will resume the subdomain is ready and waiting for you in the management panel
