12. The board of directors may, if it so considers necessary for the protection of the public, limit the right to practise of the trainee professional technologist during all or part of the training period, in particular in one or more of the following ways;(1) by determining when and where he is or is not authorized to practise;
(2) by determining the professional acts which he is or is not authorized to perform;
(3) by requiring that the professional acts that he is authorized to perform, or that certain of them, be performed under the supervision of another professional or a group of professionals.