source: They are not able to participate before thdy reach adulthood as per the law.
target: Their inclusion is not much until they reach legal adult age.
references: Their inclusion is not much until they reach legal adult age. They are involved very little until they become adults. Their participation is limited until they reach adulthood. They can participate only when they attain adulthood legally. They cannot join until they are legally adults. Their decision-making is limited until they reach legal adulthood. Their cannot participate until they reach adulthood.