In this demo you can:

- calculate different summaries when data is grouped by different columns

- change the summary types (right mouse click on the group footer cell)

- calculate using selected records only (see Options/Summary)

- ignore Null values for "Average Payment Amount" summary (see Options/Summary)

- group the table by dragging column header(s) to the grouping area (note the different summaries depending on the grouped columns)

- display a calendar by editing a PurchaseDate

- display a calculator by editing a PaymentAmount