How to move the camera to a constant position above a player's head?

You can use the following

code
actions
{
	Start Camera(Event Player, World Vector Of(Vector(0, 2, -2.000), Event Player, Rotation And Translation), World Vector Of(Vector(0,
		1, 5), Event Player, Rotation And Translation), 200);
}

Also you can see my game mod where I am using it: MXJSG.
Other my game mods can be found here.