@Nordmar
This thread has a million other questions that you "also wanted to know about". Your every reply is "oh and do you know..." "can you tell me how to..." etc.
Multiple threads will get your things answered concisely and on the point.
Also, it looks like you're making a map that you don't know how to do. Its good thing to ask and to learn, but to make something you really don't know how to make and asking a new question in every new reply kind of sucks. Where do you draw your motivation from? Its kind of obvious you want to copy stuff from other maps, which is okay. Just don't try too hard. You're getting in your way
Try to make a base map where everything works, even if its sub-par. Then you can improve it. And who knows, you might discover that you didn't really needed what you really thought you needed.
Lastly, here's a link to my creative tutorial / discussion. I advise to read it before you ask another question.
Simplicity vs Complexity