All in one Package missing prefabs.

I am following the example tutorial for a basic app in Unity. https://developer.oculus.com/documentation/unity/unity-tutorial-hello-vr/ 

I have followed the example, but when I get to Step 7, adding an OVRCameraRig, the Packages folder is empty. There does not seem to be any prefabs at all.

I have restarted Unity and my pc more than once. I have started a new project and made sure I follow each step. After installing the all in one package, there is just nothing new. 

BUT after downloading the examples for the Meta XR Core, I opened the "Cubes" example, the scene seems to have a prefab "OVRCameraRig". If I look at where this comes from its in ..Oculus\Library\PackageCache\com.meta.xr.sdk.core@60.0.0\Prefabs

How do I get these prefabs to show in the Unity editor ?