Respuesta :

highlight the row(20), then click on the insert cells button under the home ribbon.

To insert a new row between 20 and 21 - Right-click row 21's row number, and then click Insert.The general rule for inserting a column is: select the column, select Home > Insert >  Insert Sheet Columns. Using the keyboard you can do the following: With a single cell selected, hit Control + Shift + + (Plus Sign) to insert a row.