To create a formula in a table we must be sure that our cursor is in the cell that we want the result to appear. Click the blank cell you want to show the calculated result then click layout Formula. Select the second cell in the new column not the header cell the one at the end of the Smith row.
For all versions.
Select the second cell in the new column not the header cell the one at the end of the Smith row. On the Table Tools Layout tab in the Data group click Formula. Use the Formula dialog box to create your formula. Insert a formula in a table cell Select the table cell where you want your result.