; tandem The terms tandem Foreign Service personnel and tandem mean a member of a couple of which one spouse is a career or career candidate employee of the Foreign Service and the other spouse is a career or career candidate employee of the Foreign Service or an employee of one of the agencies authorized to use the Foreign Service Personnel System under section 202 of the Foreign Service Act of 1980 ( 22 U.S.C. 3922 ). (c) Family togetherness in assignments Not later than 90 days after the date of enactment of this division, the Department shall amend and update its policies to further promote the principle of family togetherness in the Foreign Service, which shall include the following: (1) Entry-level foreign service personnel The Secretary shall adopt policies and procedures to facilitate the assignment of entry-level tandem Foreign Service personnel on directed assignments to the same diplomatic post or country as their tandem spouse if they request to be assigned to the same post or country. The Secretary shall also provide a written justification to the requesting personnel explaining any denial of a request that would result in tandem spouses not serving together at the same post or country. (2) Tenured foreign service personnel The Secretary shall add family togetherness to the criteria when making a needs of the Service determination, as defined by the Foreign Affairs Manual, for the placement of tenured tandem Foreign Service personnel at United States diplomatic posts. (3) Updates to antinepotism policy The Secretary shall update antinepotism policies so that nepotism rules only apply when an employee and a relative are placed into positions wherein they jointly and exclusively control government resources, property, or money or establish government policy. (4) Temporary supervision of tandem spouse The Secretary shall update policies to allow for a tandem spouse to temporarily supervise another tandem spouse for up to 90 days in a calendar year, including at a United States diplomatic mission. (d)