@aftech yeah @KevinTheJedi is correct. That's a little beyond the scope of the software.
And to actually answer your question it really depends on how you are sending things through your router, if you have more than one public IP address, dns, etc. You can have a single webserver serve pages for more than one site.
Example:
You have a domain.
in the host record for that domain you have the host name web setup pointing to your public IP.
You can also have support. host name setup to point to the same public IP.
In your router you simply forward 443 and 80 to the ip (say using port forwarding).
Then you configure the webserver to listen on both host names (web and support). It will decide and handle what page gets loaded when you go to the fqdn. (support.domain.tld or www.domain.tld or domain.tld)
