People I have missed a point.
I have a player controller working fine and I am pleased with it. However, I do not know what to do when it comes to create another controller to manage, let say, the environment. The controller I have created for the environment is just not initialized and does not begin play. I attempted to put it into the scene so that it will begin to run without any coding. I have found that controllers are not supposed to be placed into the scene. Now what?
How can I make that custom controller begin to run?