; 129 Stat. 810) is amended— (1) in the second sentence of subsection (b), by striking such legislation as would be necessary to amend titles 10, 14, 32, and 37 of the United States Code and other provisions of law in order to implement the Secretary's approach by October 1, 2018 and inserting legislation implementing the alternate approach by April 30, 2019 ; and (2) by adding at the end the following new subsection: (c) Attributes of alternate approach The Secretary of Defense shall ensure the alternate approach described in subsection (b)— (1) reduces the number of statutory authorities by which members of the reserve components of the Armed Forces may be ordered to perform duty to not more than 8 statutory authorities grouped into 4 duty categories to which specific pay and benefits may be aligned, which categories shall include— (A) one duty category that shall generally reflect active service performed in support of contingency type operations or other military actions in support of the commander of a combatant command; (B) a second duty category that shall— (i) generally reflect active service not described in subparagraph (A); and (ii) consist of training, administration, operational support, and full-time support of the reserve components; (C) a third duty category that shall— (i) generally reflect duty performed under direct military supervision while not in active service; and (ii) include duty characterized by partial-day service; and (D) a fourth duty category that shall— (i) generally reflect remote duty completed while not under direct military supervision; and (ii) include completion of correspondence courses and telework; (2) distinguishes among duty performed under titles 10, 14, and 32, United States Code, and ensures that the reasons the members of the reserve components are utilized under the statutory authorities which exist prior to the alternate approach are preserved and can be tracked as separate and distinct purposes