How enable VR in existing non-VR project

hi all,

I do not want to make a VR game, I just need the position input from HTC Trackers. In the VR template everything is working. What assets do I need to migrate to my project for the controllers to work? I migrated the VR pawn, and set the project “start in VR true” and set the game mode to “VR”, but something is missing.

When started the “VR game mode” does not show in the world outliner.