The State or local entities may establish criteria for determining such percentage or duration using appropriate factors such as the size of the employer and types of employment. (f) Coordination of Federal administration The Secretary of Labor shall administer this section in coordination with the Secretary of Health and Human Services to ensure the effective implementation of this section. 1265. Summer employment and year-round employment opportunities for low-income youth (a) In general From the funds available under section 1263(a)(2), the Secretary of Labor shall make an allotment under subsection (c) to each State that has a State plan modification (or other form of request for funds specified in guidance under subsection (b)) approved under subsection (d) and to each outlying area and Native American grantee under section 166 of the Workforce Innovation and Opportunity Act that meets the requirements of this section, for the purpose of providing summer employment and year-round employment opportunities to low-income youth. (b) Guidance and application of requirements (1) Guidance Not later than 20 days after the date of enactment of this Act, the Secretary of Labor shall issue guidance regarding the implementation of this section. Such guidance shall, consistent with this section, include procedures for the submission and approval of State plan modifications, or for forms of requests for funds by the State as may be identified in such guidance, local plan modifications, or other forms of requests for funds from local workforce investment areas as may be identified in such guidance, and the allotment and allocation of funds, including reallotment and reallocation of such funds, that promote the expeditious and effective implementation of the activities authorized under this section. (2) Requirements Except as otherwise provided in the guidance described in paragraph (1) and in this section and other provisions of this Act, the funds provided for activities under this section shall be administered in