Replacement for the default ManyToMany Widget of Forms
<p>I know who to replace the ManyToMany Widget in the django admin interface:</p>

<pre><code>class SomeModelAdmin(admin.ModelAdmin):
    filter_horizontal = ('users',)
</code></pre>

<p>But how to replace the default widget in all views?</p>

<p>I guess this could be implemented without changing one line in my code or in django.</p>

<p>It would be great if I could the something like the Author part (two boxes for a ManyToMany input) in this picture with a widget:</p>

<p><a href="https://i.stack.imgur.com/12Xxa.png" rel="noreferrer"><img src="https://i.stack.imgur.com/12Xxa.png" alt="enter image description here"></a></p>

<p>I can use <kbd>ctrl</kbd> + click, but my users can't. They want an easier way.</p>

<p>Is there a way to replace all select-multiple widgets without many changes in my code?</p>