A certified interior designer shall complete a minimum of 1 CEU in two or more approved continuing education courses during each 2-year certificate term. As a part of 1 CEU required under §A(1) of this regulation, a certified interior designer shall complete at least 1 hour of study in a course that fulfills the following requirements: The subject matter of the course outlines the principles of sustainable design; The course has been approved by the Interior Design Continuing Education Council and the U.S. Green Building Council; and The course emphasizes the relationship of the concepts of green building and sustainable design to the protection of health, safety, and welfare of the public. Notwithstanding the requirement stated in §A of this regulation, if the certificate is granted to a certificate holder during the second year of a certificate term, the certificate holder may renew the certificate for the next full term only if the certificate holder earns 0.5 of the CEU in one or more approved continuing education courses.