Calendar module as a CalDAV server

I’m trying to sync my calendars and I think maybe FreePBX is the key. It’s been the keystone for a few other projects so why not calendars!

I’m using Outlook 2021 desktop and Thunderbird email/calendar clients. I’d like to sync them all up. I’ve read in the documentation that it works as a CalDAV client but I’m wondering if the FreepPBX Calendar module will operate as a CalDAV server?

If not, is it possible to install a CalDAV server on the FreePBX machine without compromising stability. We only have 3 pc’s that we need to sync, so the load should be virtually zero. I could change to Office 365, but I’m mildly allergic to subscriptions. :grinning: