All of this is really dependent on the lounge dragon. I once asked at the 080 lounge (BLR-T1) and she said they only want the card holder to be present and the card can be used for anyone.
At the T2 a few days later they declined to let a person use his card for his family (Adult), while I was allowed to use my card for my daughter (12 years) by the same person. I don't know if it was coz my daughter is minor and he was trying to use for adults or just that he ignored
At the T2 a few days later they declined to let a person use his card for his family (Adult), while I was allowed to use my card for my daughter (12 years) by the same person. I don't know if it was coz my daughter is minor and he was trying to use for adults or just that he ignored