I do not see an e-signature option.

I chose jot form because it had the option for an e-signature.  I do not see it.  Help please.

You can find it in our widget section. 

http://widgets.jotform.com/search/signature 

Here's our to add a widget in your form: http://www.jotform.com/help/252-How-to-Add-a-Widget-to-your-Form.