Okay so I added a new regular user to Wrike. Since I am an admin I can add new users. But then this new user started adding new users on his own but that is a bit of a problem. That means that everybody can just randomly add users. So if you create a new space and add an user there it will automatically use up a license if that person does not have an account yet. So yeah that is a pretty big deal, because that will enable regular users to add all kinds of people without having the "rights".