Themedd has four footer widget areas. Using the code snippet below you can configure more, or less. The footer widget areas shown from the AppearanceWidgets page will then reflect the new number.

/**
 * Configure the number of footer widget areas.
 *
 * @return int Number of footer widget areas
 */
function themedd_snippet_footer_widget_areas() {
	return 2;
}
add_filter( 'themedd_footer_widget_areas', 'themedd_snippet_footer_widget_areas' );

PHP should be added to your child theme's functions.php file.