My sample is here:
I am trying to aggregate the last date that each "familyID" was contacted, based on the max "lastContact" date, between rows that have the same familyID but different personIDs. In my sample, every row in the REALlastContact column should say 4/28/21. I got so far as to aggregate the data in a pivot table that returns the correct last contact date for each familyID... but I need that information to be part of the same spreadsheet. In my real data, my pivot table would have to be on a separate page and cross-referencing is what I am trying to avoid. I am trying to use VLOOKUP referencing columns of that pivot table, which requires turning on iterative calculation, to avoid a circular dependency (the source of which I am not completely aware of, but sure), it seems to work but only in one cell at a time. I am very confused by this! What is the difference between C2 and C3?
Any advice would be appreciated!