Dexp dropdown menu

Hello, I wanted to know how to create a second dexp dropdown menu? I tried to create a new navigation menu but apparently it is not automatically a "Dexp dropdown menu" so the css is not pre configured at all.. Can you please help me? Ps : i think the same question have been asked here : http://themesvision.com/forum/dexp-dropdown-menu So an answer could help other people too :) Best regards