You should have received an email or text when you made your appointment. If you can't find that, you can search for your appointment at https://smsqmatic.iowadot.gov/qmaticwebbooking/index.html#/search. Be sure to type in your name and mobile number exactly as you did for your appointment, or the system will not be able to find it.
Did you make your appointment on line?
Thanks! Your answer is awaiting moderation.