“ The Secretary of Veterans Affairs shall prescribe regulations governing the application of interim geographic adjustments to employees under the schedules for the Veterans Health Services and Research Administration of the Department of Veterans Affairs, consistent with the regulations and determinations prescribed under paragraph (1) of this subsection. ”

“ The rates of monthly basic pay and allowances for subsistence and quarters for members of the uniformed services provided for at Schedule 8 are effective on January 1, 1991. The other schedules provided for herein are effective on the first day of the first applicable pay period beginning on or after January 1, 1991. ”