The make-up exam in our school is not strict, because there can't be many students who fail in each subject, so under normal circumstances, students who fail in all subjects (different subjects) will make up the exam in the same ladder classroom, and there will be invigilators, but there may be 2-4, and the teachers will be a little looser than the invigilators in the normal exam.
But that doesn't mean you can pass the make-up exam. If you don't write or paint, you probably won't pass. There have been make-up exams in our school, but we don't know how to deal with them. So although it is a make-up exam, I still hope you can pay attention to it. I heard that some schools only need to retake the exam, and retake the exam still needs an exam, which will be more troublesome.
I hope I can help you.