Scale Model Mode
When your file loads you are brought into a scale model view. This is a macro view of your file, and you can rotate around the model using "A" and "D" or the upper triggers on a Xbox controller, or the touch pads on the Vive controllers.
At the center of your vision there is a small icon; look towards the area of the model you'd like to walk through and you'll notice a person icon appear.
In Oculus Rift: tap "spacebar" or the "A" button on a controller. This will bring you into human scale and you can navigate through your design from there.
In HTC Vive: Pull the trigger on the back of the control. This will bring you into human scale and you can navigate through your design from there.
Part of the magic behind our scale model mode is that we're able to transform your geometry to a scale that meets the bounds of the table top.
Currently, we're actively improving the way we calculate this bounding box in order to prevent issues with any hidden layers you might have. However, if you notice that the model appear very small on the table top, it is likely that there is geometry that is within your 3D file which is very far from the origin point. For example, a tree block that snapped to a distant point and only appears when you 'zoom' 'extents' within your 3D file.
If the geometry can be removed, this will help your 3D model appear properly on the table during scale model mode.