Q. How do I add an E-signature to an online form?

There isn't an easy answer for the question because it depends on the the form.  Some online forms will have an option for an E-signature that needs to be sketched using a mouse, but not all forms are designed that way.  Some forms that ask for an E-signature just want you to type your name into the form normally.  Some forms may need to be printed, signed manually, and then scanned back in.