I've seen a very similar post on here, but I'm afraid it isn't helping me very much. I am working with a 2010 version of Mac Excel. I have a list of donors, some who have donated multiple times, and I need to discern their aggregate donation amounts. I have 1261 rows and 12 columns. C is the last names, and H is their donations. I need to make two separate spreadsheets, one with those donors with aggregates between $200 and $400, and one with only those who are above $400. Any help is appreciated, I really do not know what I'm doing with Excel.