You appear to have arrived here from this Apple support page:
Organize the Home Screen and App Library on your iPhone - Apple Support
Perhaps this section of the iPad User Guide will help you with organising your Apps and App folders on your Home Screens:
Organize your apps in folders on iPad - Apple Support
The process works just the same in iPadOS16 as before in iPadOS15. If having reviewed the linked resources you continue to have difficulties, try a forced-restart of your iPad - as this will often clear an isolated software issue:
Force restart iPad (models with Face ID or with Touch ID in the top button)
If your iPad doesn’t have the Home button, do the following:
- Press and quickly release the volume button nearest to the top button.
- Press and quickly release the volume button farthest from the top button.
- Press and hold the top button.
- When the Apple logo appears, release the top button.
Force restart iPad (models with the Home button)
Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
If problems persist, please describe the problem in detail - if needed, providing screenshots where it may help to clarify the nature of the problem.
