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