Login to your dashboard and then go to:
Appearance >. Menus
Now do the following:
1) Give a name to your Menu – Standard
2) Select the primary Menu – the one you just created
3) Under pages Click select All
4) Click on “Add to Menu”
5) Now drag and drop the menu on the right hand side to place them in some form of order. See this picture:
http://tinyurl.com/9zhvdb2
the sub-Menus are slightly indented as you can see in the picture.
6) Make sure you keep clicking on Save or Save Menu buttons at each stage.
Hope this gives you an idea but always post back to get further help or to learn about official documentation.
I tried using the codex directions but didn’t know how to get the menu to be populated with the sub pages. Then I did some research and found a program that is working adequately in subpages. The plug in is Gecka Submenu. It probably is limited as it’s not gaged up to WP 3.4, just 3/1. But it does work. Thanks for your help.