; and (C) has successfully completed the education requirements prescribed in subparagraph (A) of section 661(c)(1) of this title but has not been afforded the opportunity to complete the experience requirements described in subparagraph (B) of that section. (c) Waiver to be individual A waiver may be granted under subsection (b) only on a case-by-case basis in the case of an individual officer. (d) Special rule for good-of-the-service waiver In the case of a waiver under subsection (b)(1), the Secretary of Defense shall provide that the first duty assignment as a general officer of the officer for whom the waiver is granted shall be in a joint duty assignment. (e) Limitation on delegation of waiver authority The authority of the Secretary of Defense to grant a waiver under subsection (b)(4) may only be delegated as provided in section 619a(e) of this title. (f) Regulations The Secretary of Defense shall prescribe regulations to carry out this section. The regulations shall specifically identify for purposes of subsection (b)(2) those categories of officers for which selection for promotion to brigadier general is based primarily upon scientific and technical qualifications for which joint requirements do not exist. (g) Exemption Subsection (a) shall not apply to an officer who transfers to the Space Force from a reserve component before the first day of the sixth fiscal year beginning after the date of the enactment of this section, and who, as of the date of the transfer, is serving in the grade of major, lieutenant colonel, or colonel or, in the case of the Navy or Coast Guard, lieutenant commander, commander, or captain. 20234. Opportunities for consideration for promotion (a) Specification of number of opportunities for consideration for promotion The Secretary of the Air Force shall specify the number of opportunities for consideration for promotion to be afforded to Space Force officers for promotion to each grade above the grade of captain . (b) Limited authority of Secretary of the Air Force to modify