I have signed up for Cloudflare but can find an official support option. I am not a network engineer I am an IT project manager. This is what my Outsource IT provider wrote when I sent the instructions to include our web site with Cloudflare.
“That doesn’t make sense to me, I need more information.
I can’t add these to our DNS servers, this is not how it works. You can add these to your domain name registration but you will break everything else hosted on our servers.
This will move the zone records away from us and mail, VDI, www, ford, etc etc will break.”