=SUM(OFFSET('2020 Project Load(Budgeted)'!C3,MATCH('Do No Modify! 2020 PL(Summary)'!C12,'2020 Project Load(Budgeted)'!C4:C143,0),976,1,1),OFFSET('2020 Project Load(Budgeted)'!C3,MATCH('Do No Modify! 2020 PL(Summary)'!C12,'2020 Project Load(Budgeted)'!C4:C143,0),982,1,2),OFFSET('2020 Project...