I would like to replace the WebControls.Menu control in our app with the UltraWebMenu.  The app uses a web.sitemap file to present the menu.  By setting the Menu.StaticDisplayLevels = 2, that control presents a horizontal menu across the top with node groups that dropdown.   I cannot find an equivalent in UltraWebMenu.  The result is a vertical menu with a single root node.

How do I get to equivalent functionality in UltraWebMenu?