How to turn After Entry section into a flexible widget area in Smart Passive Income Pro

A user asked:

@srikat Looking for guidance on making the after entry widget a flexible widget area in Smart Passive Income Pro. After entry isn't registered as a widget in the traditional way. Thanks in advance! https://t.co/ZTig68zaJY

— Cami MacNamara (@WebCami) February 16, 2018

Smart Passive Income Pro comes with code built-in to make these sections flexible (widgets appearing in columns/grid depending on the number of widgets placed): Front Page widget areas, Footer Banner widget area, and Footer Widgets widget area.

We can additionally make the After Entry widget area flexible by rewriting the function that outputs that widget area.

After following the steps in this tutorial, placing 2 widgets widgets in After Entry widget area, for example will display them side-by-side.

Edit Smart Passive Income Pro's functions.php.

Replace

add_action( 'genesis_entry_content', 'genesis_after_entry_widget_area', 15 );

with