You cast your vote on a ballot paper. You will receive this from the electoral board when you enter the polling station. The board may order you to show your polling card for this purpose. You go into the polling booth with the ballot paper. There you mark the ballot paper and fold it so that your mark cannot be seen.
Then go to the table of the electoral board. On request, you hand over your polling card or identify yourself. The clerk of the electoral board then checks whether you are on the electoral roll. If this is the case, you can put your ballot paper in the ballot box. The clerk will then note that you have cast your vote.