Don't write first if you need to leave a place for the leader. Write first if you don't need to leave a place for the leader. When signing in the countersign column in sequence, you need to judge according to the actual situation. If you need to reserve a position for the leader in advance, you can't write it in front, but write it in the back. If you don't need to leave a signature position for the leader, just write it at the front and fill it in from top to bottom.