chaimchaikin

Admin Menu Groups allows you to create nested menus in the WordPress admin sidebar navigation and organize all menu 
items in groups as needed.
A few notes about the sections above:
<ul>
<li>Create groups to organize the admin menu</li>
<li>Put less frequently used or advanced options in their own group</li>
<li>Hide unused items in the admin menu</li>
<li>Group related menu items</li>
</ul>

Admin Menu Groups

This is an underrated plugin. It is exactly what I expected: Keep my admin menu tidy since I see it almost everyday.

Especially impressive drag and drop tool. So I can make it works without finding any documentation like common plugins.

Thank you!

Underrated plugin

Admin Menu Groups allows you to create nested menus in the WordPress admin sidebar navigation and organize all menu items in groups as needed.

jojoee

By default wordpress menu system, wordpress can only automatically add/remove top-level page to/from menus
<ul>
<li>When publish top-level page then add it into menus</li>
<li>When move top-level page to trash then remove it from menus</li>
<li>When restore top-level page then add it into menus</li>
</ul>
this feature has no effect with subpage (child page), but Auto Subpage Menu can
<ul>
<li>When publish subpage (child page) then add it into menus (if its page parent exists in menu)</li>
<li>When update subpage (child page) then update menus</li>
<li>When move subpage (child page) to trash then remove it from menus</li>
<li>When restore subpage (child page) then add it into menus</li>
</ul>
<h3>Notes</h3>
<ul>
<li><a href="https://codex.wordpress.org/WordPress_Coding_Standards" rel="nofollow ugc">WordPress Coding Standards</a></li>
<li><a href="http://www.phpdoc.org/" rel="nofollow ugc">phpDocumentor</a> DocBlock Standard</li>
<li><a href="https://wordpress.org/plugins/auto-subpage-menu/" rel="ugc">Auto Subpage Menu</a> – WordPress Directory Uri</li>
<li>2 spaces for indent</li>
<li><a href="https://github.com/jojoee/auto-subpage-menu" rel="nofollow ugc">Repository on Github</a></li>
</ul>
<h3>TODO</h3>
<ul>
<li>[ ] Implement DocBlock to all</li>
<li>[ ] Automatically update child-page when its parent have been move, suggested by <a href="https://wordpress.org/support/profile/ncwebdev" rel="ugc">ncwebdev</a>, <a href="https://wordpress.org/support/topic/menu-link-doesnt-work-properly-when-moving-a-page" rel="ugc">topic</a></li>
<li>[ ] Add other versions into wordpress download page</li>
</ul>

Auto Subpage Menu

The idea is good but the support is not very good. So if you find another plug-in with similar functionality I would advise to try that!

Good idea but bad support

By default wordpress menu system, wordpress can only automatically add/remove top-level page to/from menus

Admin Menu Groups vs Auto Subpage Menu