All VR forms On-The-Net that require signatures look like this:
To add a signature, click in the white space and sign using a mouse, touchpad, or touchscreen. Once the signature has been added, click the "Save Signature" button.
If you would like to re-sign, just click "Clear Signature" and sign again.
Once signatures have been saved, you will see the following when returning back to the form:
You will not see the signatures again. If you click on 'Re-Sign", you have the opportunity to re-sign if you choose. The original signature is not overwritten until you click "Save Signature" again.