M365 Excel - Insert or Delete rows and columns

Insert or delete a column

1. Select any cell within the column, then go to Home > Insert > Insert Sheet Columns or Delete Sheet Columns.
2. Alternatively, right-click the top of the column, and then select Insert or Delete. 

Insert or delete a row

1. Select any cell within the row, then go to Home > Insert > Insert Sheet Rows or Delete Sheet Rows.
2. Alternatively, right-click the row number, and then select Insert or Delete.

Formatting options

When you select a row or column that has formatting applied, that formatting will be transferred to a new row or column that you insert. If you don't want the formatting to be applied, you can select the Insert Options button after you insert, and choose from one of the options as follows:

If the Insert Options button isn't visible, then go to File > Options > Advanced > in the Cut, copy and paste group, check the Show Insert Options buttons option.