Example code of properly prefixed functions.

functions.php

<?php
/*
 * Example code of properly prefixing your functions
 * Unique identifier: ck
 *
 */
 
 add_action( 'genesis_after_header', 'ck_third_navigation' );
function ck_third_navigation() {

  // Code

}

add_action( 'genesis_header', 'ck_dynamic_header' );
function ck_dynamic_header() {

  // Code

}

add_action( 'genesis_footer', 'ck_footer' );
function ck_footer() {

  // Code

}