Sidecar: Extend Desktop
How
- On the Mac, open Control Center from the menu bar
- Click Screen Mirroring
- Select your iPad
- Open System Settings → Displays if needed
- Set the iPad to 'Extended Display' instead of mirror
- Drag Mac windows onto the iPad screen
Try this
Open Safari on your Mac and a notes app window. Drag the notes window onto the iPad screen. Confirm you can type on the iPad while Safari stays on the Mac.
Why it works
Turn your iPad into an extended desktop for your Mac.
Your iPad becomes extra screen space.