Paste this code at the end of the Prose child themes init.php file.

Add Widget To Prose Home Page

genesis_register_sidebar( array(
	'id'			=> 'home-slider',
	'name'			=> __( 'Home Slider', 'prose' ),
	'description'	=> __( 'This is the slider widget area for your homepage.', 'prose' ),
) );

add_action( 'genesis_before_content_sidebar_wrap', 'child_before_content_sidebar_wrap');
function child_before_content_sidebar_wrap'() {
if ( is_home() && is_active_sidebar( 'home-slider' ) ) {
		echo '<div id="home-slider">';
		dynamic_sidebar( 'home-slider' );
		echo '</div><!-- end #home-slider -->';
	}

}