To the extent permitted by federal law and notwithstanding Sections 11006.2, 11056, 11450 and 11455, a county electing to utilize the aid payment method provided by this chapter may establish new eligibility periods and payment periods which may be monthly or semimonthly and which are not limited to a calendar month to correspond with changes of payment dates under this chapter.

Changes in eligibility or payment periods under this chapter shall be approved by the department before implementation.