I have a sheet containing a Time Block column as well as a Type column. Both are dropdown columns one with time in hours (.24, .5, .75, 1, 2 and so on), the other has types of activities (Dev Meeting, General Admin, and so on). I am trying to build a formula that adds the time for each activity by the month. I can't get past adding up the time by activity. Right now I am doing it in as part of the Sheet Summary. My formula is: =SUMIF(TimeBlock:TimeBlock, ={Dev Meeting}, Type:Type) I get a total of zero, indicating the formula is correct, but I know there are several entries of Dev Meeting types equaling several hours. Any help is appreciated.