Detailed information on VIVE setup can be found on VIVE's website here:
The PeriopSim application requires the use of SteamVR. This can be downloaded from the Steam Store https://store.steampowered.com/app/250820/SteamVR/
It is important to note that a Steam account will normally be required for setup. After setup and configuration is completed PeriopSim VR can be installed.
Installing PeriopSim VR
The latest version of PeriopSim VR can be downloaded from HTC's Viveport Store. You will need to establish a Viveport account which is a free account.