2. After expansion, we see the option of "pdf signature". Click on the small triangle symbol next to it, and "Create a new signature" will pop up. Let's click Open.
3. After opening, we choose the corresponding signature method to create the signature according to our personal preference. Click OK after signing.
4. Then we click on the triangle symbol, click on the signature tag we just set, and then move the mouse to our PDF content and put the signature in the position we want.