Register a sidebar with Genesis

functions.php

<?php
// Paste the code BELOW this line into your child theme functions.

/**
 * Register a sidebar with Genesis
 * 
 * @author Reasons to Use Genesis
 * @link http://reasonstousegenesis.com/register-sidebar/
 */
add_action( 'widgets_init', 'rtug_register_sidebar' );
function rtug_register_sidebar() {

	genesis_register_sidebar( array(
		'id' => 'sidebar-post',
		'name' => 'Post Sidebar',
		'description' => 'This sidebar displays on Posts but not Pages.'
	) );
}