• Dear Sir,
    1.At first, select a column.
    2.Hover over the border of the selection.
    3.Press and hold the Shift key on your keyboard.
    4.Click and hold the left mouse button.
    5.Move the column to the new position (left/right).
    6.Release the left mouse button.
    7.Release the shift key.

    Please ask if you have any confusion regarding this issue. Thank you.