We need that the person who register is older than 18 years. The law department say us is enough if we filter with birthday field, but we must put a minimum date.
Hi Unai Marzo,
I am sorry for the delay of this reply. Unfortunately, there is no setting to age limit currently by set a minimum date. For now, you can set it by minimum age by year old (please refer this screenshot: http://screencast.com/t/tFQGKXwzO4fn )