Allow managment of System app on multiple devices
Currently we can delete a managed app from multiple devices, but if the app isnt managed (such as pre0install Apple apps) you have to drill down to each device individually and choose to manage the app before it can be deleted.
Travis Young commented
The inbuilt apps such as Numbers only work with an AppleID.
However, if the app is deleted, and then a licence acquired through Apple School manager, and deployed fresh they can work without requiring an AppleID sign-in.
However, to do this each app needs to be 'managed' one-by-one, and only then can they be deleted.