Custom documents

I’ve noticed that the plug in checks that a user can edit the document by checking the edit_posts, but if a user can only edit a custom post type then they cannot schedule and save a document as the _eb_attr_ is added and the return current_user_can(‘edit_posts’); returns false

public function auth_callback()

{

return current_user_can(‘edit_posts’);

}

Is there a way to manage additional user roles / custom document?