For the ARSessionConf, I follow this tutorial: Creating your first HoloLens Unreal application - Mixed Reality | Microsoft Learn. You could also try this video: UE4 Hololens 2 Basic Setup - YouTube
For the ARSessionConf, I follow this tutorial: Creating your first HoloLens Unreal application - Mixed Reality | Microsoft Learn. You could also try this video: UE4 Hololens 2 Basic Setup - YouTube