Ipad as a second monitor

This is a GREAT tool that Apple finally made "native" a couple of years ago.

On your MacBook go to:

Settings

Displays

Click the "+" tab and select your iPad Pro.

Make sure the iPad is awake and connected to WiFi.

This is called "SideCar"

Use an iPad as a second display for a Mac - Apple Support

That should do it!

There is another option to control your iPad Pro with your MacBook, but this does not make the iPad a second monitor. It just makes it so the iPad is controllable with your MacBook. This is called, "Universal Control".

Universal Control: Use a single keyboard and mouse between Mac and iPad - Apple Support

Yes, "Duet" is a great app. Ive used it many times! Especially with video editing.

And don't forget about simply adding desktop windows to your MacBook!

If "Gestures" are enabled on your MacBook:

Swipe UP with 3 Fingers to view all open applications and to add a new desktop window.

After adding a new desktop window

Swipe LEFT with 3 Fingers to switch between Desktops.

Swipe RIGHT to return to first Desktop.

An iPad can be used with a compatible Mac to extend the Mac display to the iPad using the Catalina/iPadOS Sidecar feature.

Use iPad as a second display for your Mac – Apple Support

An alternative third-party product, Duet, can be used to extend a Windows PC or Mac display to an iPad:

https://www.duetdisplay.com/

No App is required if you have compatible devices. click here ➡️ System requirements for Side Car on Mac and iPad - Apple Support

SideCar is built in to compatible Macs. For instructions on how to use it click here ➡️ Use an iPad as a second display for a Mac - Apple Support

This article should tell you what you can do: Use an iPad as a second display for a Mac - Apple Support