A PDF editor software and a drawing software that comes with the system are enough. First, cut the chapters in the file and paste them on the drawing board, click the cut button to enlarge, use the eraser tool to remove the unnecessary shadow parts in the chapters, and select all the pictures to copy. Click the PDF Editor software, click the signature menu, and then set the signature. Set from the pasteboard. All right. If necessary, in the form of signature, which point should be stamped?