this is something that a more advanced user would look into.

perhaps you want to start with something simpler, if you are new to 3dgs - like getting a camera working, and having a player walk around a small, simple world.



if you must know how to do this, perhaps you could ask your Teacher, who is supplying the program to you, and is supposed to be teaching you how to use it.

It could be that your teacher is waiting to teach you how to program fog, until much later.