Need Help Setting Up Campaign Levels!! :(

I feel so stupid having this problem, but it's the first time I've ever really tried using the Campaign Editor Ever.
I'm trying to set up the order of the levels,
but somehow a level I dont want anymore is attached to a level I add.
Picture is linked below,
HOW do I remove the Red Map from being attached?

http://img228.imageshack.us/img228/5071/wtfyx1.png

And also, How Do I attach "Sewer" To "The Town"?
Theyre both connected to Adventure, but how do I make a second "Sewer" that's attached to "The Town"?

It's really confusing to read/explain.

Do not double post (read rules).
I would have merged the posts like usual but I can not anymore.

Try learning from the Warcraft 3 RoC and TfT campaigns. They are unprotected afterall and all that is needed is for you to extract them from the .mpq archives for WC3 thay are found in with a mpq browser.

I know double posting is generally against the rules, but I've been waiting all day for an answer. Sorryy.

I've looked at the Demo Campaigns, and theyre already set up.
So it doesnt quite help.
Somehow I chained one level, but I cant do that anymore.
Here's a picture for better explanation.

http://img176.imageshack.us/img176/9183/wtf2td4.png

Anyone know how to fix it?

You are allowed to double post if it is not necro posting and is 48 hours since your last post.

Check the propper campaings, like the undead and orc ones of TFT.

I have not ever made one myself but try rightclicking the mission and seeing the options. Try dragging missions under each other.

Honestly I am not sure fornow.

it doesnt help if Im looking at a campaign that already has the levels in order/connected.
Anyone know how to help?
Read my post above for image.