I followed the manual instructions which says: " GameGuru MAX has the ability to run your game in Virtual Reality mode with any
compatible OpenXR device and controller. By default this option is disabled to speed
up the initialization time of game making sessions, and can be enabled by selecting the
VR Support in the Developer Mode section of the Settings Menu:
Once activated, a new button will appear on your main toolbar alongside the Test
Level button and can be used to test your level in VR:"

However I see no new button and nothing in any of the menu's to activate VR so I can test some of the games that come with GAMEGURU max . Please help, thanks!

In Settings Developer you should only need to tick the box and the icon will appear to the right of the launch icon
However two things ..
VR is only in a Test mode at the moment .. Its ok for running around and checking out your stuff but they have not really started work on it fully yet.

Second thing is right now its broken anyway and only shows half a screen however that is currently being fixed.