Using SUMIFS with multiple AND OR conditions

Question

I would like to create a succinct Excel formula that SUMS a column based on a set of AND conditions, plus a set of OR conditions.

My Excel table contains the followi

Answer 1

You can use DSUM, which will be more flexible. Like if you want to change the name of Salesman or the Quote Month, you need not change the formula, but only some criteria cells. Please see the link below for details...Even the criteria can be formula to copied from other sheets

http://office.microsoft.com/en-us/excel-help/dsum-function-HP010342460.aspx?CTT=1