Cloud Sync WebDAV Set up

I am wanting to set up a Cloud Sync for both Goodnotes 6 and Notability however I am not sure how to use the Cloud Sync WebDAV option I have only used Cloud Sync for Goggle Drive. I was hoping someone would know how to set up a cloud sync using the WebDAV option.

From the top of my head:
You need the destination’s WebDAV address and credentials. When you connect CloudSync to the WebDAV destination, fill in the required information.
Does that make sense to you?