Automatically all of a nav menu item's descendants as submenu items. Designed for pages but will work with any hierarchical post type or taxonomy …

cybokron

Cybokron Advanced Widget Visibility

Show or hide widgets by page, category, taxonomy, post type, and user context with descendant support.

Alex Mills

<p>When adding a page, category, or any hierarchical custom post type or taxonomy to your navigation menu (Appearance → Menus), this plugin allows you to optionally automatically add all descendants (children) of that menu item as submenu items.</p>
<p>In short, you’ll no longer have to manually maintain submenus when you add a new child page to your site.</p>


Add Descendants As Submenu Items

Still works great. Much better than Gecka Submenu - it doesn't break the layout on the menu screen and there's no unnecessary pro version upsell.  I hope this is updated at some point because its age is hiding it from WP's search results.



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