The examining board is
- monitoring the course achivements,
- stating if foreign achivements are equivalent,
- organising the examinations,
- appointing examinants and
- observing the regulations
The examination board will accept all requests - even if he is not in charge of it - and will pass it to the proper office, if necessary. So if you have no idea, whom to contact, in any case the examination board is a suitable contact.