A year or so ago I found this to be impossible, there was no application for desktop that was as simple as receiving a phone call. My father has no smart phone. I sent him a zoom link via email but he couldn't log on to the family computer without getting blasted with UI updates, terms of service changes, "Do you want to use OneDrive?", "Here's what's new in Chrome", "Try asking Copilot anything!", etc. From his perspective the computer never worked the same way twice. I wish we had regulations that prevented buying out competition.