To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. Employers and employees must complete their respective sections of Form I9.The form is used to document verification. Filling Out a Money Order to Pay the Form I-765 Filing Fee. Below is information on filling out sections of a money order. OPT is one type of work permission available for eligible F-1 students. It allows students to get real-world work experience related to their field of study. Locate a USCIS field office. Please refer to your interview or appointment notice to confirm the field office address for your visit.