(a) A trainee who receives up to three months' credit for completing the theory portion of a course of instruction pursuant to section 192.4(k) of this Part may not perform any activity directly related to the dispensing of a particular hearing aid or hearing aids unless such activity is conducted under the direct supervision of a registered dispenser for a period of three months. For the next three months, such trainee may not perform any activity directly related to the dispensing of a particular hearing aid or hearing aids unless such activity is conducted with the immediate consent, review and approval of a registered dispenser.

(b) For the purpose of applying to take the written examination, up to three months' course credit may be counted toward satisfying the six months' training program. However, no trainee may apply to take the written examination or practical test until the conclusion of the three-month period of direct supervision.