in the latest beta EAP model targets release we has this handy Create GuideViews options which created a gameobject in the hierarchy that handles all the guide views. There you could also alter the position of the 3D guide views. I attach an image.
I dont see a similar functionality with the build in 7.0.47 vuforia and the Vuforia Model targets sample.
How do we attach 3d views now, and how do we alter the positions of the 3d guide views?