You can just copy it and send it via email or Google chat. Open FaceTime on your Mac, create a link and share it any way you want. There are a bunch of audio, video and layout changes coming to FaceTime, but the most important change by far is the ability to invite anyone, even if they don't have an Apple device at all, to a FaceTime call via a browser link. MacOS Monterey beta lets you try out features in development.
But do what you want, I'm not the laptop police. As always, I suggest that you do not install an OS beta on your mission critical machine, or your only one.
