Quote Rita:
Hello,
I had the same problem and solved it.
1. In joomla go in extensions to module manager. Select the module of the menu where you want to use submenu's. At the parameter section make sure you enable "always show submenu's" and also select how deep you like to show the submenu's.
2. Make sure you activate submenu's in the template as explainer above.
Good luck ! Rita from Belgium ARTISTEER IS GREAT !