How the heck can I do that on pfsense? I searched the folders and I couldn't find it!
I wouldn't need to access it if I know that I can add acls for reverse proxy items in the custom options box on the "front page" of the squid proxy service.
Squid.conf gets built from the template located within /usr/local/pkg/squid.inc Edit the file there and you should be all set. You'll need to either restart or reboot the service to see your changes. Also a good idea to search the forum before posting.
I did search the forum, but perhaps my google-fu is not upto scratch.
So I just edit the squid.inc file as I would the .conf file?