And to create a custom post type is not an option?
'post_type' => 'custom_post_type'
then just hide the custom post type from the UI
see Possible to hide Custom Post Type UI/Menu from specific User Roles?
And to create a custom post type is not an option?
'post_type' => 'custom_post_type'
then just hide the custom post type from the UI
see Possible to hide Custom Post Type UI/Menu from specific User Roles?