Unable to modify my form.

Tell me the Process to Modify the Form

I assume you are referring to this form? http://www.jotform.me/form/62011254415442. Your form was created on a guest account, which may be why you are unable to modify it. Please sign up for a free account using the same email you used, and the form should automatically be transferred to your account. If not, let us know on this thread and we shall move the form from the guest account to your registered account. Regards.