My customers keep seeing a SteamVR menu pop up while they are playing. How do I turn that off?

The Vive hand controllers have a system button below the trackpad that is often pressed accidentally by players during gameplay, prompting a menu screen to come up inadvertently in the game. This is highly disruptive of gameplay and results in confusion and communication challenges. Disable the Vive system button as follows:

Enter the SteamVR Settings -> Developer and uncheck the checkbox “Enable VR Dashboard”