You need better colleagues for one. Anyway, to create an electronic signature, you can go the old fashioned way of printing the document, signing it, scanning it and email it back. But this is the 21st century, so of course we have a faster and better way to do it.
I will teach you how to make one in Microsoft Office. Office supports the most secure way for signature verification, called digital signature. So what is a digital signature? It’s actually closer to a digital certificate, issued by a trusted third-party certificate authority. It forms a public key that lets you validate the information.
To get one, just attempt to sign the Office document, you will be prompted by the “Get a Digital ID” dialog. If you choose to get an ID from a Microsoft partner, you will be directed to the Office website, to the market for purchasing an ID. If the signed document required to have an authentic verification from you for the recipient, do get one of the certificates from a reputable certificate authority.
You can also create your own ID for a faster result. Click the “Create your own digital ID” option in the dialog box (do note that the “Get a Digital ID” prompt only appears when you actually tries to sign a document with no certificate. A design flaw I guess.) Just fill in your Name, E-mail address, the name of your company and your location. Click Create and you are ready to go! But by using this method, the signature can only be authenticated on the computer you created the signature, so do this if you just need an electronic signature.