Go to the Inbox section of your XenFax account. Click on the Send Fax button, after clicking on the fax number you want to send a fax from. Now click on Upload Files.
You can follow this navigation to reach the destination: Inbox -> Fax Number -> Send Fax -> Upload Files.
Once you upload a file, you will see an Edit and Sign option in the right side of your uploaded document. Click on that, a new pop-up will open where you can find the edit options.
You can add text, date and checkmark in the document. It also allows you to change font size and add your signature and initials.
There are three ways to sign your fax document. You can upload your signature, type it or draw it in the screen of your device.