Thanks for the reply Cosmin!
1. How I supposed to call the new meta-boxes file on the child funtion.php? I try this code but don’t work:
define('SF_TEMPLATE_PATH', get_template_directory());
define('SF_INCLUDES_PATH', SF_TEMPLATE_PATH . '/includes');
define('SF_WIDGETS_PATH', SF_INCLUDES_PATH . '/widgets');
define('SF_LOCAL_PATH', get_template_directory_uri());
2. How I specify a sidebar (sidebar 1) on the post section on meta-boxes.php?