alpipego

This plugin makes long and complex navigation menus better manageable by creating groups that can be expanded and collapsed.
By default, all navigation menus in wp-admin will be collapsed. When holding the Option/Alt-key while clicking, all sublevels will be expanded with one click.
For general support, please use the support forums on <a href="https://wordpress.org/support/plugin/wield-menu" rel="ugc">wordpress.org</a> 
For developers: Head over to the <a href="https://github.com/alpipego/wield-menu/" rel="nofollow ugc">Github repository</a> 
For everything else, find me on <a href="https://twitter.com/alpipego" rel="nofollow ugc">twitter</a> or slack

Wield Menu

I had this problem when working on themes demo as they have all possible page in the menu.

Thanks!

Very handy

Make long and complex Navigation Menus wieldable

Nazmul Sabuz

Create beautiful vertical navigation menus anywhere on your site! Features both modern block editor support and legacy widget compatibility. Perfect for sidebars, footers, or any content area.
Key Features:
<ul>
<li>Block Editor Support – Use the Advanced Navigation Menu block in any post, page, or template</li>
<li>Legacy Widget Support – Still works with the classic widget system</li>
<li>Vertical Navigation – Optimized for vertical menu layouts (horizontal support may be added in future versions)</li>
<li>Unlimited Depth – Handle navigation menus of any complexity</li>
<li>Customizable Styling – Multiple themes and accent color options</li>
<li>Smooth Animations – Elegant expand/collapse transitions</li>
<li>Mobile Friendly – Responsive design that works on all devices</li>
</ul>

Advanced Vertical Menu

Create beautiful vertical navigation menus anywhere on your site! Features both modern block editor support and legacy widget compatibility.

Wield Menu vs Advanced Vertical Menu