With iPadOS, you can use multitasking to use more than one app at a time. You can use this function by following these quick steps:
Open an app.
Tap the Multitasking button at the top of the screen.
Tap the Split View button or the Slide Over button. The current app should then move so that your Home Screen appears.
Tap a second app on your Home Screen.
If you chose Split View, the second app appears side by side with the current app.
If you chose Slide Over, the second app opens in full screen and the current app moves to a smaller window that you can move to the right or left-hand side of your screen.