How to do a Gaze Selection Radial to transition from one Unity scene to the next scene?

VR Unity and VIVE


Do you know how to do a Gaze Selection Radial so when someone looks at a round “Enter” button, this transitions from one Unity scene (a blank splash screen with an “Enter” button) to the next Unity scene (a new environment)?





^ Once the Selection Radial completes a full circle,

the current scene fades out and the next scene fades in.

Currently, when I press the spacebar, the scene fades out and the next scene fades in.
However, I want the viewer to be able to start the experience themselves inside VR.

Thanks for reading and for any help/direction!