Overriding Cells in Data or Calculation Rows
Open a tabular row section report in RDA.
Click the tabular section.
From the Cell menu, select Cell Mode.
On a data or calculation row, click the cell that you want to override.
From the Cell menu, select Create Override, Calculation.
On the Cell Properties form, modify the name and description on the General tab, if appropriate.
Set properties on the available tabs as appropriate, and click OK.
On the Expression Manager form, define the expression to populate the cell with a new value, and click OK.