I know Excel is not part of Windows - but I could not find any other board that fits. I have visited the Microsoft Office Help site - with no info regarding exactly what I need to know. I am using the SUMIF function - I have data in 4 separate columns (2 are inventory counts & 2 are categories) this is done to keep separate tallies from 2 different workers, who are essentially doing the same thing. What I need to know is if I can set 2 values to both the range and the sum_range, so that I can create a running tally of all inventory instead of having to add the totals of both workers.