subdomain creation

hello all -

i had a bit of an emergency where i needed to create a subdomain. i could not remember (or never learned) how to do this in virtualmin, so i CHEATED and edited the httpd.conf file. here is what i added:

< VirtualHost xx.10.xx.xx:80 >
    ServerName example.marky.com
    ServerAlias www.example.marky.com
    DocumentRoot /home/marky.com/public_html/examplewebsite
< / VirtualHost >

i had hoped that this change would show up somewhere in virtualmin so i could "reverse-engineer" what i was supposed to have done, rather than cheat.

i did see there was a cool looking sub-server option, but i could not quickly see where i could specify a different DocumentRoot.

suggestions?

thank you all !