This feature can be activated with the module Pro shop - merchandise system
You get to this menu topic via Articles/Edit statistic area.
This is where you can set if the statistic query should be included in the cash register payment process. So if you want to activate this query enter the check mark and define the required statistic areas. The describing names are freely definable. The picture shows a few examples:
When the query is activated you can include the statistic areas in your evaluation via Accounts/Print…Statistic. Then go to the tab Filter and select one or more Statistic areas.