Progress
A progress control provides feedback to the user that a long-running operation is underway. It can mean that the user cannot interact with the app when the progress indicator is visible, and can also indicate how long the wait time might be, depending on the indicator used.
You can find the samples in the scene Progress_Examples.unity under https://github.com/Microsoft/MRDesignLabs_Unity/tree/master/DesignLabs_Unity_Examples/Assets/MRDL_ControlsExample/Scenes
You can find Progress.prefab under Assets/MRDesignLab/HUX/Prefabs/Dialogs/
