Add a cell, row, or column to a table

On the Table menu, point to Insert, and then click an option.

To quickly add a row at the end of a table, click the last cell of the last row, and then press the TAB or ENTER key.
To add a column to the right of the last column in a table, click in the last column. On the Table menu, point to Insert, and then click Columns to the Right.
You can also use the Draw Table tool to draw the row or column where you want.