That just produced the NAME error for me.
This array formula however resulted in a blank in C6 and either Worked or Off in the other column cells...
Beau NydalIF(SUM(IF((B7>=$D$7:$D$371)*(B7<=$E$7:$E$371),1,0)),"Worked",IF(SUM(IF((B7>=$F$7:$F$371)*(B7<=$G$7:$G$371),1,0)),"Off",""))
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