Hi,

I also notice that I'd forgotten to make the ranges absolute, so in order to be able to copy down

Formula: copy to clipboard
=SUMIF(A$2:A$7,K2,B$2:B$7)+SUMIF(C$2:C$7,K2,D$2:D$7)+SUMIF(E$2:E$7,K2,F$2:F$7)+SUMIF(G$2:G$7,K2,H$2:H$7)+SUMIF(I$2:I$7,K2,J$2:J$7)