Click on the app icon on the Add-ins tab or type TLLSystem in the AutoCAD command line to open the app palette.

Adjust settings as required and click on the Draw button to generate the geometry in AutoCAD.

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 7/8.1/10/11) and uninstall as you would any other application from your system.

For stochastic rules make sure the individual rule probabilities add up to 100% - the app will still generate the L-System, but the result may not obey the correct distribution if this condition is not fulfilled.