Register a Genesis Sidebar and Output

register-and-output-genesis-sidebar.php

<?php
genesis_register_sidebar( array(
    'id'          => 'widget-slug',
    'name'        => __( 'Widget Location Title', 'child_theme_name' ),
    'description' => __( 'Widget Location Description.', 'child_theme_name' ),
));

// an example of how to output the registered sidebar to a specific theme location
add_action( 'genesis_after_content', 'home_bottom_section' );
function home_bottom_section() {
    echo '<div class="bottom-section">';
        dynamic_sidebar( 'widget-slug' );
    echo '</div>';
}