If you click the ? mark icon you will be taken to: https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/welcome-to-mr-feature-tool

Download Mixed Reality Toolkit

This package is used to convert and update your Unity projects. This tool also comes with the AltSpace uploader for Unity built into the the toolkit which you can download the one tool here. https://aka.ms/MRFeatureTool

If you are using MacOS the Mixed Reality toolkit is not available and you will need for the time being using the tarball package instead.

Exploring Mixed Reality Toolkit

Let’s explore the gear icon located on the far bottom left hand corner.

Diagnostics Tab