1. Open the document you need to sign.
2. Click "Fill and Sign" on the right hand side:
3. Click "Sign" on this tool bar at the top:
4. If you already have a signature saved then just click on it. The signature will be attached to your cursor and you can click it on the signature line:
and then
5. If you don't already have a signature saved then click the option to add a signature:
6. Type your name and you can choose a signature style that you prefer. If you already have an image file of your hand written signature then you can click the image option to add in that image. Click Apply at the bottom:
7. The signature will attach to your cursor and then just click on the signature line to drop the signature:
8. Now add your digital certificate to the document (Here is how to create it if you need to -- https://support.atu.edu/a/solutions/articles/7000045627). Click on "More Tools" on the right:
9. Click on the icon for Certificates:
10. Click Digitally sign on the tool bar at the top:
11. Click OK on the window that pops up and draw a rectangle with your mouse to create the area for your signed certificate:
12. Now choose the certificate you saved and click continue:
13. Type in the password you created for the certificate and click sign:
14. You then get a pop up window asking where you want to save the document. Pick your favorite location and save it. After saving the file you will see the document has your signature and digital certificate: