Adding a Storyline
Select a scene and click on the scene summary button 
In the scene summary editor add new characters, props, locations or events
Showing Storylines
Each item added becomes a storyline and can be viewed in the storyline editor.
The storyline is shown as a colored line running across the editor.
Storylines in the Storyline Editor
You can add an item to several scenes. In the above example the storyline for 'Alec' is connected to Ch2. Scene 1, Ch2 Scene 2 and Ch 2 Scene 3. Click the image above for a bigger picture.