Can I Add New Data at the Top Row of the Table?

If you click the plus (+) button to add a row to the table, the new row is added just below the row that you selected to click the button. You cannot add a new row above the selected row.

As an alternative, you can leave the top row of the table unused and click the plus (+) button on the top row when you add a new row. By doing so, new data will be added to the second row.