Monterey 12.0.1 supports the use of another Mac’s display over Wi-Fi or USB, provided that both models support AirPlay. Here’s how to use it.
AirPlay
When you upgrade your Mac to Monterey, just which of its new features do you expect it to support? All is made clear in this table.
Some of the most attractive features of the next major version of macOS won’t be available to all models which can run Monterey. Here’s the fine print.
Do you ever stream over AirPlay? This weird bug doesn’t appear common, but could be infuriating.
The Eclectic Light Company 