It wouldn't be any good putting it in the cell where you have names, because
you would then be over-writing the names with your formula. Put the formula
somewhere else; an adjacent column is often most convenient. In answer to
the question which I think you may have intended to ask, then yes, you need
a copy of the formula referring to each cell from which you want the answer.
You have at least 3 options:
Copy the original formula and then paste down the rest of the column.
Select the bottom right-hand corner of the cell and the cursor will turn
into a + which then works as a "fill handle" which you can drag down the
column.
If your formula is adjacent to your original data column, double-clicking on
the fill handle will fill the formula down the column as far as there is
contiguous data.