You can group the scenes in your script into acts. You can use acts to organize your script into the classic three-act structure. Story does not limit the number of acts in a script. Your script can have any number of acts.
The outline view of a script displays the acts inserted in a script. You can expand/collapse the acts. You can also use drag-and-drop to rearrange the scenes within an act or across the acts. You can also change the default text for Acts/Parts using the template.