This is always so complicated and I do not know. Sometimes they need a simple majority representing so and so many citizens and so and so many different countri

This is always so complicated and I do not know. Sometimes they need a simple majority representing so and so many citizens and so and so many different countries (i.e. so that big countries [De+Fr+UK] can't overrule small ones and the small ones can't overrule big ones) some hings have to be unanimous, sometimes a simple majority is enough ...