If you wanted to add our Layout Options metabox to a custom post type’s create/edit admin pages, you’d need to write a function that does that.
For example…
function wombatCPT_add_meta_box() {
add_meta_box(
'layout-options',
__( 'Layout Options', THEME_NAME ),
'mf_ua_callback',
'wombat',
'side'
);
}
add_action( 'add_meta_boxes', 'wombatCPT_add_meta_box' );
The above function adds the Layout Options metabox for a custom post type named ‘wombat’.
The function can be added to your ‘functions.php‘ file.
For the function to work you would need to know the name of the custom post type.
References:
http://codex.wordpress.org/Function_Reference/add_meta_box