1. For levels selection, select the bottom and top level to create a new 3d view.
2. For crop selection, select the 3d view and from the plan view crop the region to be shown in the selected 3d view.
3. For Orientation of section box to specific face in 3d view select orient section box to face. 
4. For Orientation of 3d view to specific face select orient view to face. 

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.