How do I add more than 1menu on the theme

How do i add a category above the slider it seems i only can add only 1menu below the slider?

Hi!
By default, there are two menus always visible on your screen, the "Main" menu and the "Top" menu. To customize any of them you have to go to the page Appearance => Menus and set the created menu as a main/top menu. Here are the intelligible instructions:
http://codex.wordpress.org/WordPress_Menu_User_Guide.