Calendar publishing host.

DAFT QUESTION ALERT.....

So we have a Cal/CardDav Server that we setup for our Macs, and that works fine. But it's just for users not resources etc...

So... I want to setup to be able to see resources calendars. From what I understand I need to setup a Ssytem Wide Calendar Publishing host under Systems / Calendar Publishing...

Can I just use our existing Cal/CardDav server and set the Calendar Publishing host to be the https://name/ of our Card/CalDav Server ?

Thanks in advance for any answers to my probably obvious question. I'm hoping that the answer is yes... But I don't want to try it in case i break our cal/card dav server so just want external confirmation i'm not being an idiot before i go ahead and try it.

As before I try it if I type https://network_address/gwcal/ I get a 404 error as it currently of course doesn't exist. (edit without the /gwcal we get a response showing the welcome page with options to show directory, principles and push)