How To Reschedule For Us Visa Appointment

I need assistance on how to cancel a previously booked appointment at the USembassy and reschedule another one.  Can any one tell me how to do that. My brother booked for interview a month ago. but can't meet up with some documents so we want to reschedule.

go back to the website and use the password given o your apointmnet letter printed out to access your previously booked appointment and reschedule your interview date.

pray very well before going s document does nt matter at the embassy.