First, let's create a dashboard with a Start and a Stop button, as follows:
- From the Project window, drag the DefaultCanvas prefab onto the MeMyselfEye object in the Hierarchy panel so that it becomes a child.
- Rename it to Dashboard.
- With Dashboard selected, set the Rect Transform component's Pos X, Pos Y, Pos Z to (0, 0.6, 0.6) and its Rotation to (60, 0, 0). Feel free to adjust the position for preferred comfort zone and your specific VR device camera rig.
- Disable or delete the Text child object of Dashboard.
This places the dashboard 1 m below your eyes and a little out in front.
For a work-in-progress look, if you'd like, I've included an image sketch of a vehicle dashboard that you can use, as follows: ...