There are two ways of exam transfer:
Transfer by exam organizer
OpenEdu transfer (Open Education Platform)
Transfer by exam organizer
Enrollment cancellation is possible only if your take an exam with self-enrollment in Calendar and only if your exam organizer agreed to do so. Exam transfer requires enrollment cancellation and enrollment into another time slot. (Enrollment cancellation. How to?)
OpenEdu transfer
Self-enrollment cancellation is possible only if your take an exam with self-enrollment in Calendar. The cancellation requires unenrollment and re-enrollment into another time slot (Enrollment cancellation. How to?)
In other cases, exam transfers and start\end dates should be clarified with the exam organizer.
NOTE: In case of doubtful situations, contact your exam organizer and ask for your exam transfer. Examus Customer Care Service specialists cannot cancel your enrollment or transfer your exam.