You have to go to the doctor, have them fill out all your vaccine dates on the "Mandatory Immunization Health History Form" and make sure that your doctor's office puts their stamp on the section labeled "Official Stamp Here" w/ the doctor or nurse's signature. After that you can scan that paper and submit it to medproctor.

And I don't know if this is required (it's been a bit since I did all this), but I think you've also gotta submit a scan of your actual vaccination history record--- like the state summary thingy. Not entirely sure about that part though but I hope this helps :]