Well for starters, you need to know what button to press to bring up the script editor. There are icons on the top that are used for other things, but for this I will only show you the one that you need to press. You can also press the F11 button to bring it up. The Image below shows you which one to press.

Once that comes up you will see a bunch things like Base_this and Scene_that. Well scroll all the way to the bottom until you see the picture below.

And Click on Insert Here

Now I will let the program do some horrible explaining in the picture below.

Basically that says when you get a script just copy and paste it into that area. Under Materials but above Main. When you get a new script Right Click and select Insert and will give you another space for another script.

Now its really simple. All you have to do is just copy and paste your scripts into that area. As it states in the picture below, you must copy the script identically and paste it. And if you have problems ask on that thread. Unless the last post on it was over 12 Months ago. The picture below states what I just explained.