Beginning July 1, 2007, an individual who does not meet the requirements for licensure by examination pursuant to section 154E.3 may apply for or renew a temporary license. The temporary license shall authorize the licensee to practice as a sign language interpreter or transliterator under the direct supervision of a sign language interpreter or transliterator licensed pursuant to section 154E.3. The temporary license shall be valid for two years and may only be renewed one time in accordance with standards established by rule. An individual shall not practice for more than a total of four years under a temporary license. The board may revoke a temporary license if it determines that the temporary licensee has violated standards established by rule. The board may adopt requirements for temporary licensure to implement this section.