(1) An acting appointment in circumstances likely to lead to the confirmation in the post of a person appointed to act shall be made in accordance with the procedures and principles detailed in these Regulations for appointments to the Teaching Service except that an acting appointment shall not be advertised.
(2) When such acting appointment is known to be temporary the person appointed shall normally be the senior qualified and/or graduate teacher in the school or institution concerned.
(3) Where an acting appointment is likely to become permanent the claims of all serving qualified or graduate teachers for promotion shall be given due consideration by the Commission.
(4) An acting appointment shall not at any one time exceed 3 years.