You can add rows and columns to the table using the tools on the Home tab, in the Table group:
– Insert row above: Alt+A (Option+A).
– Insert row below: Alt+B (Option+B).
– Insert column to the left: Alt+L (Option+L).
– Insert column to the right: Alt+R (Option+R).
Add rows or columns to the table
1.Select a cell or a range of cells.
2.Press the desired button, keyboard shortcut, or open context menu and select the desired command from the Insert row or column list.
If you select multiple rows or columns, an equal number of rows or columns will be inserted.