How to Use Your iPad as a Second Monitor
Instructions apply to iPadOS 15 and later and macOS Monterey (12)and later. ViewApple’s Sidecar requirementsfor the full list. Here’s how to use this feature to run your iPad as a second monitor for your Mac. OpenSystem tweaks(orSystem Preferences) on your Mac from theApple menuor the Dock. grab the+ (Plus)orAdd Displayand choose your iPad from theMirror or extend tooptions. you might also access these options fromScreen Mirroringin the menu bar. Open theControl Centerand snag the icon if you don’t see it in the menu....