At the moment Skore does not "aggregate" the quantification data of each child box in its parent.
For quantification, all boxes are created equal. All boxes are added up to give you the final result. Therefore, it is best to only capture quantification data on boxes without detailed view.
The quantification data can be extracted in the "report" tab, so one option is to do the grouping outside of Skore, in MS Excel.
If your process is long and complex, it may be worth splitting it into several processes so that they can be independently analysed.
In a future release of Skore, we will be able to do quantification for several processes simultaneously (at the workspace level), so that will provide some sort of aggregation.
Now i'm curious about your need to see aggregated data? Are other people interested in that feature ?