VR widget library like steam vr home

Good evening at all !!! I’m trying to develop in Unreal a menu similar to STEAM VR HOME! I should then create a library in VR where through a widget menu you can take objects and drag them into the scene.
(as in this video minute 0:27: WHAT IS STEAM VR HOME ? - YouTube)
Does anyone know how I can do ??? !!?!?!
THANK YOU