I have a long questionnaire. i will be collecting information about family members. one question of them is the date of birth. the number of group will be equal to the family members, so each member will have a the same group of question and will be opened automatically based on a family size previous question.
Now, i have some questions related to the family members and will be shown later in the questionnaire only of the family has like (9-16 years children) or ( woman above 13 years). this will be one question but will be reflected if any of the family member have these critieras.
So my question how can i make this condition based on date of birth so it calculate age directly?
and if this can be happened if the groups of family member are different, so old and so kids, will this be valid of any of the groups have the condition needed?