To create a VR project using the Mock HMD device, do the following:
- Having installed the VR template, create a new VR project in Unity.
- Open the Project Settings window (menu: Edit | Project Settings).
- In the Project Settings window for the XR Plugin Management settings, select the desktop tab (on the left), and then check the box for Mock HMD Loader. You may see a message stating that it is installing:

Figure 15.30 – Selecting Mock HMD Loader Plug-in Provider in the XR Plug-in Management settings
- Open the Project Settings window (menu: Edit | Project Settings...). For the Package Manager settings, check the Enable Pre-release Packages option:

Figure 15.31 – Enabling Pre-release Packages for Package Manager
- Open the Package Manager window (menu: Window | Package Manager). Select Unity Registry from...