The resulting pivot table can contain many different entries. By grouping the entries, you can improve the visible result.
選擇 [資料] - [群組與大綱] - [群組]。
Depending on the format of the selected cells, either a new group field is added to the pivot table, or you see one of the two Grouping dialogs, either for numeric values, or for date values.
The pivot table must be organized in a way that grouping can be applied.
若要移除群組，請在群組內按一下，接著選擇 [資料] - [群組與大綱] - [取消分組]。