A quick tip for moving apps to different home screens on the iPad.
Create a folder using the first couple of apps, then place the folder in the dock. You can now drag all the othe apps you want to move to the folder in the dock (from multiple home screens), swipe to the destination home screen and drag the apps back out of the dock folder.
It’s not worth the trouble to move one or two apps, but if you’re doing wholesale re-arranging, it can save a lot of time.
Similarly, if you are collecting apps from multiple home screens to keep in a folder, you can add apps to a folder in the dock until it is complete, then drag the folder to the home screen where you want to keep it.