About 3D viewer workbench
The 3D viewer workbench by Visody is designed to help you get the camera positions for the various annotations in your model. And to help you pick the locations of your annotations in your 3D model. This will save you a lot of guesswork. When clicked, you can just copy-paste the values into the Visody annotation fields.
If you do not use model animations, or need to get other camera values, you can best use the ModelViewer editor by Google to get the desired values. Make sure to check our guide here.