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To include the Sum-up row, click the Sum-up icon (
) in the right corner just above the table.
The Sum-up row is included as the first row of the table, just below the table header row, and is preceded by an
icon. 
You can see that the SUM value is displayed by default for all numeric columns except the non-numeric columns.
You have options to change the Sum_-up type between Sum, Avg and None.
Option 1: Change the Sum
...
-up type using the Edit column dialog
To display the average value for any specific column, click the ellipsis (
). For reference, to display the average value for the Tax column, click the ellipsis.
The ellipsis menu for each column becomes active, enabling the Edit column dialog box to open only after the Sum-Up row is inserted.
The Edit column dialog opens. Click the Sum-up type drop-down and select the required type. For reference, Avg is selected.
The Tax column displays the Avg value. Likewise, you can choose the Sum-up type for each column as required.
Option 2: Switch between the Sum
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-up type with clicks
Quickly switch the Sum-up type with a series of clicks on the specific column header without opening the Edit column dialog. Each click changes the displayed values between Sum, Average, and None.
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