Open the PDF document that has a signature field that you would like to sign
Click on Tools in the top left menu
Scroll down and select Certificates under Forms & Signatures
Click on icon Digitally Sign
Follow the instructions to use your mouse to click and drag an area for your digital signature
After using your mouse to draw a shape for your signature over the signature field, you will be prompted to Configure a Digital ID. Click the button to Configure Digital ID
Select Create a new Digital ID and click continue
Select Save to Windows Certificate Store and click continue
Enter your name and email address and click save
Select your Digital ID and click continue
You will see your new digital signature. Click the button for Sign
Save the PDF document with your added signature
Your document will now appear with your digital signature applied.