Create Custom Widget Area

I would like to ad a “widget area” below the breadcrumbs on the normal search-page/home-page.

I am following the following instructions … https://www.designchemical.com/blog/index.php/wordpress-tips/wordpress-tutorial-adding-a-widget-area-to-your-theme-files/

My Problem :

I can not figure out where to place the code … “<?php /* Widgetized sidebar */
    if ( !function_exists(‘dynamic_sidebar’) || !dynamic_sidebar(‘my_advanced_search’) ) : ?><?php endif; ?>”

Can anybody help/direct me … ?

Thanks
Henk