Cliff Seal

Simply put: this plugin gives the Editor role access to edit “theme options”, which includes:
<ul>
<li>Appearance > Widgets</li>
<li>Appearance > Menus</li>
<li>Appearance > Customize if they are supported by the current theme</li>
<li>Appearance > Background</li>
<li>Appearance > Header</li>
</ul>
Instead of adding this capability by hand on each client site, just install and activate this plugin—it keeps your <code>functions.php</code> file clean, and keeps this type of functionality where it belongs.
The capability is added to the role once (on plugin activation) and removed when the plugin is deactivated.

Editor Theme Options

Allow editors to access theme options in the Appearance menu.

Pieter Bos

Whilst many people have opposed the decision, the navigation menu interface was forced into the Customizer.
As there are many people who don’t have to time to explain this to all existing clients, this plugin simply removes the menu panel/section from the Customizer.
We support this plugin exclusively through <a href="https://github.com/senlin/so-customizer-hide-menu/issues" rel="nofollow ugc">Github</a>. Therefore, if you have any questions, need help and/or want to make a feature request, please open an issue over at Github. You can also browse through open and closed issues to find what you are looking for and perhaps even help others.
If you like the Customizer Hide Menu plugin, please consider leaving a <a href="https://wordpress.org/support/view/plugin-reviews/so-customizer-hide-menu#postform" rel="ugc">review</a> or making a <a href="https://so-wp.com/donations" rel="nofollow ugc">donation</a>. Thanks!
<a href="https://so-wp.com/plugin/customizer-hide-menu" rel="nofollow ugc">Customizer Hide Menu plugin</a> by SO WP.

Customizer Hide Menu

Removes the Navigation Menu paqnel from the Customizer.

Editor Theme Options vs Customizer Hide Menu