Sun represent father, moon mother, Mars and Mercury younger brother and sisters and Jupiter elder brother, Family members are like pillars that support a child and other members in building his career and achieving the desired goal. Each family member has some rights as well as some responsibilities towards each others.
No doubt father and mother has special role but other members can equally contribute towards achieving accord in the family. Astrologically, each person has different individuality, different thoughts and different personality. Then how all the members can live in harmony with each other?
In all the above requirements, parents have the leading role. As and when the other members grow up and start earning they should join their parent's responsibilities. Mothers may have different role of nurturing and making sure that emotional needs are met. Responsibilities should be divided so that no one member feels overburdened.