ShinichiN

This plugin enables you to create unlimited custom sidebar/widget areas and switch existing areas. You can do this without touching your theme.
This plugin utilizes term meta api and so it works only with WordPress 4.4 and above.
Your theme needs to use <code>is_active_sidebar()</code> when calling <code>dynamic_sidebar()</code> function.
This will work.
<pre><code>if ( is_active_sidebar( 'sidebar-1' ) ) {
 dynamic_sidebar( 'sidebar-1' );
}
</code></pre>
This doesn’t work.
<pre><code>dynamic_sidebar( 'sidebar-1' );
</code></pre>
If you only want to output your custom sidebar, put this code on where you want to display the sidebar in your theme.
<pre><code>do_action( 'dynamically_dynamic_sidebar' );
</code></pre>
<a href="https://github.com/ShinichiNishikawa/Dynamically-Dynamic-Sidebar/" rel="nofollow ugc">This Plugin published on GitHub.</a>
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Dynamically Dynamic Sidebar

Create unlimited custom sidebar/widget areas and switch existing areas depending on post, page, custom-post-type post, categories, tags and custom tax …

bythegram

The plugin creates a Widget Area named Staff Lists and a Staff List widget. There are a few ways that you can use the plugin in your theme,
you can place the Staff List widget in your existing Sidebar, or you can use the widget area provided and place it into your theme using the [stafflist] shortcode.
The shortcode will also allow you to display the Staff List widget area in a post or page if you don’t want to edit your template files. Options for the short code are class and title. Defaults are class=”ag_staff” and title=””.
Example: 
[stafflist class=”yourclass” title=”The Title”]
Note:
This plugin comes with some very basic css so you may need to edit to suit your site needs.

A Staff List Plugin

A simple plugin that creates a widget area and a widget that helps you display your staff names and roles

Dynamically Dynamic Sidebar vs A Staff List Plugin