Go to Start > Configuration > Users & Security > Modules > Check the 'Advance Security' module > Save > Log out and back in again for the changes to take effect.

Next, ensure each user has been granted the Advanced Security extension (if you have Business Professional you don't need to carry out this step). To do this go to Start > Configuration > Users & Security > Users > For each user you need to open their record and check the 'Advanced Security' extension within the licence section > Save & Close.