Select "Menus" from the Appearance menu in the left sidebar of the Dashboard. Click the check box next to the page (or pages) you want to add in the "Pages" box.

How to Create a Subheader Menu in WordPress. The WordPress content management system provides a free framework for building websites and blogs that are easy to update and customize. One important ...

If you're not using Categories with your WordPress sites, you should be. Jack Wallen shows you how to associate Pages to Categories in the new WordPress editor.