To set up basic aggregation by factors parameters, use the Parameters side panel tab.
To display the tab
Make sure that the side panel is displayed.
In the data table select the series calculated by the Aggregation by Factors method.
Select the Series radio button on the side panel.
Go to the Parameters tab.
Parameters on the tab correspond to the parameters of the Aggregation dialog box, which opens upon creating a calculated series.
See also:
Working with Calculated Series | Aggregation by Factors