Based on these steps: https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/persistence-in-unity
Verified on Unity 2019.4.9f1, Visual Studio 2019, HoloLens 2 (Build 10.0.19041.1377)
Added MRTK according to the MRTK getting started tutorial at https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/tutorials/mr-learning-base-02 Added debug prefab from this example: https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/tutorials/mr-learning-asa-02#importing-the-tutorial-assets Added manipulation handler: https://microsoft.github.io/MixedRealityToolkit-Unity/Documentation/README_ManipulationHandler.html