"Match Target" will use the target object's path as the camera's path.
Offset X/Y:Additional 2D offset of the camera path.
"Elliptical Orbit" uses an ellipse as the camera's path
Radius A/B: Radius of the ellipse along each axis. Using equal values for both will yield a circular path. The center of the ellipse is the midpoint of the target's path.
Offset X/Y:Additional 2D offset of the camera path.
Step Size: Step size (degrees) per frame.
Orbit Offset: Initial radial offset along the path of the orbit.
"Linear" uses a line between the start and end points of the target path
Offset Start X/Y:2D offset of the start of the camera's path.
Offset End X/Y:2D offset of the end of the camera's path.