I'm using the navigation bar from Twenty Ten in a theme based on Kubrick. It's working fine. All my top-level pages show up in there with child pages that cascade underneath. Perfect.
What I want to do is add "categories" and "archives" as two more menu items with all their listings cascading down just like child-level pages do, and I don't understand where or what I would place in there to do it.
I'm trying to figure out how it works to call up the pages, and the callup tells me nothing. So I have no idea how I would add a "categories" and "archives". Here's the callup:
<?php wp_nav_menu( array( 'container_class' => 'menu-header', 'theme_location' => 'primary' ) ); ?>