1. Select the element to be distributed in the room
2. Select 3 successive inner corners of Rectangular space
3. Specify the array dimensions (Rows and Columns)
4. Specify the spacing option
5. Pick the host of distributed elements

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.