Create an invisible Sprite called "Camera". Give it the ScrollTo Behavior
Give the camera an instance variable called "FollowUID"
Create a family for objects you might want to follow called "Followable"
Every tick Pick By UID the Followable object you want using the camera's FollowUID variable. Set the camera's position to that object
This is nice because you don't have to give the ScrollTo behavior to every object you want to follow. Also, you can do effects with the camera like a smooth follow behind the character. Also, you can sometimes have the camera move independently of the character or stand still. This method gives you a lot of control