How to always center camera on active character...
game.HorizontalScrollDistance = (game.WindowResolution.x / 2)
game.VerticalScrollDistance = (game.WindowResolution.y / 2)
Add that inside of an execute a script action part.
You can reset it back to the default value by doing the same thing, but setting the values back to 5...
game.HorizontalScrollDistance = 5
game.VerticalScrollDistance = 5