In the back. Many leaders sign on the same page, and the leader with the highest position should sign at last. Because if the leader with the highest position signs first and writes at the front, then letting the leader with the lower position sign later will give people a feeling of echo-the big leaders have signed, so let's sign. If the low-order signature comes first and the high-order signature comes last, it not only embodies the bottom-up consistency, but also embodies the democracy or the highest-ranking leadership.