Hello, When in the assembly room hit Ctrl+shift+t to bring up the scene effects tab in the properties tray. You should see 2 tabs , effects & filters. Select filters as toon is a post render filter. Click the "+" sign to open up a new selection area and choose toon . Press the edit to see the settings window . Do an area render of your scene in the assembly window by clicking "x" and drag, then you should see the toon effect after it renders.