The plugin is available via the Add-ins menu within the Revit application.

By clicking on the main plugin icon, a new view of the model will be presented with a box displayed to the right of the model containing information regarding the building geometry.  Once changes to the Revit model have been made to satisfy the necessary geometry, clicking the Export button allows the user to create a .planit file for import into the PlanIT Impact online platform.

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.

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.