1 - Sign up with http://www.visuallive.com to create your account. 

2 - Open your 3D model in Autodesk® Revit® and set the section box around the area you want to push to the device.

3 - If you are pushing the model for mobile devices/ AR headset, you need to Place Start Point which is the location where you want to start walking in the model. 

4 - If you are pushing model for HoloLens, you need to Place HoloLive Marker in your model which is going to be the reference for the HoloLens app to place your model in the correct position.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10) and uninstall as you would any other application from your system.