I am trying to set up my web server so that I can server multiple Ghost.org blogs. I am stuck in one crucial step. To be honest, my knowledge in servers is not so big, so I request your help to do this.

Basically, a tutorial I'm reading suggests I set up a VirtualHost in this way:

    NameVirtualHost *:80
<VirtualHost *:80>
     ServerName your-url.com
     ServerAlias www.your-url.com
     ProxyRequests off
     ProxyPass / http://127.0.0.1:2368/
     ProxyPassReverse / http:/127.0.0.1:2368/
</VirtualHost>

So I have gone to the Virtual site on Virtualmin to try to add everything as is.

Services > Configure Website > Edit Directives

The problem is, the previous page (Services > Configure website) says I can't edit the port:

This Apache virtual host belongs to the Virtualmin server linguist.andyibanez.com, so the address, port, base directory and hostname cannot be changed here.

And whenever I try to add the ProxyRequests off (the other two can be added fine) directive in Edit Directives manually, I'm simply told that the directive can't be there.

So what is the right way to "add" the last three directives in the VirtualHost above to my sub server? Maybe I'm missing a menu item that will help me with this? I request your help as I have looked for a while, Google keeps thinking I want to serve Webmin via Apache when I google "Set up Virtualmin proxypass", and I have no clue what to do.