You can insert blanks rows above or below another in Excel, and you can even add them between each row that has data.

Microsoft Excel PivotTables turn data into meaningful information, but it's difficult to add grand total rows. Read on to learn how.

Select the data, including the heading rows and columns, and click Insert > Table. Visually confirm that the range you’ve selected is correct, click the My table has headers checkbox, and click OK.

Second, if you use the same formula as in regular ranges, Excel will struggle to correctly continue the running total if you add new rows to the bottom of your table.