Creating and Using Report Tables
 Inserting a Column into an Existing Table
 Inserting a Column into an Existing Table
To insert a new column into an existing table:
Enable Layout Mode on the Edit menu.
Select the entire column, including its header and it’s the cell Total, to the left of which you want insert the new column:

Select Insert Column(s) on the context menu. A new table column is inserted that also contains a Total cell.
Double-click the header of the new column to open the Report Column Properties dialog box. Select a variable from the Variables list (Please note: The picture only shows part of the dialog box):

Click OK to assign the selected variable to the new column.
Fill the cell Total. Click a different cell in this line, which already contains a value. Copy the cell reference by pressing the Ctrl + C keys and then paste it into the new cell by the pressing Ctrl + V keys. (The format of the copied cell is automatically transferred, too. Adapt the format to the new column if necessary.)
For more information, refer to  Inserting and Editing Tables.
 Inserting and Editing Tables.