How to add drop down menu in WP theme where is that not supported?

Hello,

I making website for my friend and he chose this theme http://themeforest.net/item/magzimus-blog-magazine-theme/full_screen_preview/124491

and i making it now, but it doesn't have drop down menu but i need it...so if some1 know how to add dropdown menu?

I try it with menus but not working it show me all pages on home page and its ugly ...

So is there any way to add it and how? Or some Wordpress plugin wich can help me to add it simple?

Thanks!

May be this plugin can help you?