How can we create a Subdomain with Webadmin

hello dear experts hello dear friends

the question is: How we created Subdomain with Webadmin
hi there currently planing the creation of a subomain on apache
can i do the following in a internal net vHosts
with the Webadmin

btw found these HowTo

https://bobcares.com/blog/webmin-subdomain/

Unlike cPanel, in Virtualmin/Webmin, there is no direct option for creating subdomains.
In addition, subdomain has its document root inside the parent’s domain document root, as in cPanel. So it’s tricky to create subdomains in Webmin. For example, the document root of subdomain is “/home/username/public_html/foldername”.

Let’s see how our Support Engineers set up a subdomain in Webmin.
Steps To Create Sub Domain in Webmin

Firstly, we log into Webmin control panel.

Then go to Servers > Apache Webserver.

From that page, we select “create new virtual host”.

Also, we fill the following field too.

Handle connections to address: We select the specific address and IP address of the subdomain in the text field.
Document Root: We enter the path of sub-domain,
4. At last, we click on the “Create Now” button.

Now, the subdomain successfully created in Webmin.

Note: once we have created the Webmin subdomain, a proper DNS record must be added to the corresponding subdomain. Otherwise, errors will appear on the website.
However, you may get errors like “Unable to determine IP address from host name xxxx.domain.com” after creating subdomain due to improper settings in the configuration file.

can you help me