So I tried this and got nothing.
function add_location() {
$field_group = apply_filters( 'acf/load_field_group', $field_group );
if ($field_group['key'] = 'group_5fc70b388fe13')
{
array_push($field_group['location'],
array(
array (
'param' => 'post_type',
'operator' => '==',
'value' => 'registration',
),
)
);
return $field_group;
}
}
add_action('init', 'add_location');