[Plugin: Ubermenu] 3-level menu showing all the time

Hi

I am working on a site where I want to have a 3-level menu. 1. level will be the main nag and therefore be showing all the time.

When a menu item is clicked 2. level should show and if a menu item there is clicked the 3. level should show.

Any idea on how to do it?

I really appreciate any help…this is driving me nuts 😀

Bolette