I have embedded an e signature in a form I have created however when I preview and click on that field nothing happens. How does it work?

I see you are referring to the signature field on this form: http://www.jotform.ca/form/62655302729256 

I don't seem to encounter any issues with the signature field. Are you experiencing any errors while signing the field? To input your signature, drag your cursor on the signature canvas or sign with your touch if using the form on mobile.

Please let us know if you are encountering further issues with the form.
Regards.