Xcode 6 has these options when you export an archive:
But Xcode 7 has just two options and "Save for Ad Hoc Development", that is the one I want, is not there.
How do I save for Ad Hoc Development on Xcode 7?
Perhaps the problem is that you don't have an Ad Hoc distribution provision? I'm using Xcode 7 and Save for Ad Hoc Deployment is present on my machine: