For Supplementary Membership (with no card being issued), it is only applicable to the Principal Card Member's children who are below 18 yrs old and they can be registered with the Principal Card Member at no cost. However, the child will not get his/her own PAssion ez-link Card but he/she can share the use of the Principal PAssion ez-link Card. The child is still entitled to discounts for courses/activities at CCs/PA outlets.