How to use Messages to share your screen in macOS

If you need to quickly offer help to another Mac user you know, there's no quicker way to remotely provide assistance than via Apple's own Messages. Here's how to take control of another person's Mac on their behalf, and how to allow others to do the same to your desktop.The perils of family tech support can leave you needing to quickly assist a relative or friend who may be new to Mac ownership, or can't adequately search for a solution by themselves. Support over the phone can also be problematic, and while doing the configuring yourself may be the fastest way, it isn't a great idea if it involves travel.For small and quick fixes that aren't easily explainable over an audio-based phone call, using a system that enables remote control of their Mac is a better answer. However, you may not necessarily want to go down the process of setting up a remote desktop system, especially if it's a one-off issue. Read more...