Hi All,
There isn't a clear post for how to deploy iTunes using group policy. As iPads are making their way into education, especially for staff, you may find this post useful.
Here is a link to my YouTube video of the deployment process:
ORCA is required from the Microsoft Windows SDK for Windows Kit - https://www.microsoft.com/en-gb/download/details.aspx?id=8279
Controls can be configured using the a registry key: https://support.apple.com/en-gb/HT201677
Hope this helps