a quorum for the 6-month period beginning on the date of the vacancy which caused the number of commission members to decline to 2. (h) SEAL The Bureau shall have an official seal. (i) COMPENSATION (1) CHAIR The Chair shall receive compensation at the rate prescribed for level I of the Executive Schedule under section 5313 of title 5, United States Code. (2) OTHER MEMBERS OF THE COMMISSION The 4 other members of the commission shall each receive compensation at the rate prescribed for level II of the Executive Schedule under section 5314 of title 5, United States Code.