by Dustin Filippini on WordPress.org
Easily add and change Widget Areas on any page template using Advanced Custom Fields and the Advanced Custom Fields: Widget Area Field plugin. This plugin will add a field with a drop-down selection of all registered Widget Areas in your WordPress installation. You can select which widget area you would like to display in your template files when using ACF’s get_field and the_field functions.
As of version 1.0, support for ACF v5 is included.
Advanced Custom Fields can be found in the WordPress Plugin Repository Here.
This add-on will work with: