可以写判断
F(OR(MONTH(TODAY()) = 1, MONTH(TODAY()) = 2, MONTH(TODAY()) = 3), "Q1", IF(OR(MONTH(TODAY()) = 4, MONTH(TODAY()) = 5, MONTH(TODAY()) = 6), "Q2", IF(OR(MONTH(TODAY()) = 7, MONTH(TODAY()) = 8, MONTH(TODAY()) = 9), "Q3", "Q4")))

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或是
roundup(month(today())/3)
