In this case, I would say that it is largely up to you. The job codes don’t have a legal effect, they are for statistical purposes. Since all four jobs are basically similar in that you use your personal vehicle to deliver people, food, or packages, I don’t think there would be a problem in combining them on one schedule C, particularly as that may make it easier to report your mileage when you perform several different jobs on the same day. If you wanted to keep them separate, you certainly could.
