A cutscene is composed by a number of Tracks, every track describes the animation of an object's parameter over the time.
After you have selected a cutscene you can add a new track or edit/remove an existing one using the Tracks panel.
Track group name
Tracks are grouped 'per object', in the sense that all tracks that animate the parameters of the same object are grouped in a unique section whose name is tha name of the object.
If parameters do not belong to any object (scene parameters) they are grouped together into the "scene" section.