If you want to leave DHC Drienerlo for any reason, there are two moments in a season to do so. You should send an email with a deregistration request before the 1st of December or the 1st of July.  To do so, you have to send an email to the Secretary. You are officially deregistered if you have a confirmation from the Secretary. If you are too late, your membership will be ended at the next unsubscribe date.