MOOC Office 365
If you select Sum, Excel adds the SUBTOTAL function. 00:02:19. But you can add a function to any cell you want: 00:02:21. select a cell, then go to the Formulas tab on the ribbon; 00:02:26. here you have a whole library of functions. 00:02:29. Click AutoSum, click Sum, and the function is added to the cell.