In this article I would tell you how to create menu structure when creating of your site pages.

Solution:

1. Select Menu section in the site administer. Create new menu (for example,"My menu"). Show block with menu in the desired place.
2. Find Create content and begin creating of a document.
3. Under the field for article content input, click “Menu settings”.
4. Enter name of menu item for your document here. For example, "section 1". And select parent menu item. In our example we set “My menu” as parent menu item.
5. Save the document.
6. Enjoy your menu

My menu
-section 1

Clicking the "section 1" you will see just created document. I.e. menu structure is created as you add new documents which are menu items.