In the Management Console, you go to User Management (First Tab), and you can see all your users. There, when you mouse over one user it will appear an option gear on the right side, click on that gear, then Edit User, it will appear a pop up with the user info. In the second tab Permissions at the bottom, you can see TeamViewer Policy and there you can edit it as you need them.
Thanks for your answer Leo, but this does not work. And this is also what I was told by TeamViewer support, this is why I put it here in the "Ideas and feature requests".
It seems that even though the dropdown is there for allowing users to assign policies it doesn't work, once you have your groups created by a company administrator and the clients assigned to the company administrator account (for the purpose of grantig easy access).