The family tariff applies to up to 7 persons travelling together, not more than 2 of whom are adults (21th birthday before the date of the start of the trip).
These persons do not have to be related to each other. A joint residence is not required.
When the premium is being calculated the family tariff is automatically proposed if this is more favourable for you than the single tariff and you enter a maximum of 7 persons of whom not more than 2 are adults.