Posts, pages and menu items – all mixed

Hi,

I’m new to wordpress and I need a bit of info as to how to organize the content.

Let’s say i have 4 companies, and for each one i need to make a menu item:

Company 1

• About us
• Divisions

• Division 1
• Division 2

• Tasks

• Running
• Finished

About us, Division 1 and Division 2 are fixed articles.

Company 1, Divisions and Tasks are just separators and are not pages or posts.

Running and finished contain multiple articles.

Now, I need somebody to clarify the basics of wordpress, regarding this particular situation.

If i just use separators for Company1, Divisions and Tasks, then the breadcrumbs aren’t proper.

Should I just make all content as posts or to mix posts and pages? How can I make it so that the breadcrumbs follow the menu, without losing the separators?

For instance, is there a plugin that can automatically output sub items of a menu? So i don’t have to use separators, but rather when you click on divisions it outputs a page/post containing links to sub items – Division 1 and Division 2?

I could manually add those in a page, but then I’d have to do that every time i change a menu.