Hi Catherine, The Advanced Reporting course mentions the concept of "https://support.workfront.com/hc/en-us/articles/217145078-View-Column-Project-with-Average-Actual-Duration-Aggregated-in-Grouping">Calculated Aggregates , but according to "https://support.workfront.com/hc/en-us/articles/115000497647-Calculated-Custom-Data-Vs-Calculated-Columns">Calculated Custom Data Vs. Calculated Columns , "when you want to aggregate the data beyond the aggregation that is calculated in the field", Workfront recommends you (instead) use a Calculated Custom Data field. Doing so also lends itself to charting, advanced column highlighting, etc. which could also be beneficial, so I'd also recommend the latter. Regards, Doug Den Hoed - AtAppStore Got Skills? Lend a hand!
https://community.workfront.com/participate/unanswered-threads