To be DEMO certified and recorded in the DEMO Specialists register, you need to pass an exam.

Upcoming exam sessions which have room for extra participants are listed here. An exam session lasts 3 hours.

EXAMS
DEMO Bachelor Exam (no longer available)SPECIALISTS
DEMO Master Exam (no longer available)SPECIALISTS
DEMO 4 Professional ExamSPECIALISTS
DEMO 3 LecturerSPECIALISTS

It is highly recommended to take a course before enrolling in an exam. But it is possible to take an exam after self study. 

The cost of DEMO Lecturer exam is €600, to cover the expenses of the DEMO specialists register and the defense committee.