Apple today released new developer betas of iPadOS 15.4 and macOS Monterey 12.3, and the updated software adds the long awaited and highly anticipated Universal Control feature. We tested out Universal Control, and even in an early beta form, Universal Control is an easy to use and convenient multi-device control option.
To use Universal Control, the iPadOS 15.4 beta and the macOS Monterey 12.3 beta must be installed on your iPad and Mac, respectively. When you update, the feature is enabled by default and should work automatically, but we did run into an issue where we needed to restart the Mac to get it to work.
Settings for Universal Control on the Mac can be found under Displays > Advanced if you want to turn it off for some reason or change the functionality, and on the iPad, you can find the toggle under General > AirPlay & Handoff.
Read more at MacRumors.com