All tracks are created when you drag an object, or element into an empty space in the Action Track list from the Viewer window, Asset or Scene browser. The type of track created depends on what you drag.
An Animation track appears, and the object is automatically selected in the track’s Track Contents menu.
To create a Character Animation track
A Character Animation track appears, and the character is selected in the track’s Character menu.
To create a Camera animation track:
A Camera Animation track appears, and the camera is automatically selected in the track’s Track Content menu.