Drop down menu

try to set it up with custom links in your custom menu editor..

this is how to do:
1.) go to APPEARANCE -> MENU
2.) add a custom menu if you didn’t yet..
3.) add the links / pages and so on..
4.) add your categories and sub categories and order them via drag and drop in the menu editor..

should be intuitive if you play around with it a bit,
if you need any further help just drop by here again,

hope this helps,
konrad

here some more help: https://support.themekraft.com/entries/21621451-Custom-Menu