Please make sure you have read the “Resubmission” part of CFP to know the details about the resubmission. To submit a resubmission file PDF, first upload your submission. You will then be able to upload the resubmission file from the author console as a supplementary file. There are two entries for supplementary files: one is “TechnicalAppendix”, which is the normal supplementary file for the main paper; and the other one is “ResubmissionFile”, to which you should upload the resubmission file. Note that the maximal size of the resubmission PDF is 10M.