There's no single right way of handling retakes/makeup days on our system, our users handle retakes/makeup days in a variety of methods. Here are the two main ways I've seen users handle retakes/makeup days:
Option 1 - Create a new album in the original job and upload photos with QR cards from the original job, activate accesses like normal etc.
Option 2 - Create a new separate job with new QR cards (Better for up-to date coupon and archiving, more ideal when shooting large volume of retake/makeup days)
If the number of kids is substantial then option 2 may be more ideal for you - just remember with option 2 you might need to link the new access codes to the student data so they can choose from all the photos when selecting their yearbook pose. You can also run a full coupon and communications profile again with option 2 as well.