I'm not sure about that. I hold a wealth account with IDFC and very recently got my sister's IDFC FIRST power account upgraded under the family banking program which I was told about from my RM. She even got the same Visa infinite card as mine, but for her own account. Although we recently got a joint account together, so maybe that might be it. Since my sister is no way maintaining such high balances or even at times the AMB. So I'd say whoever needs it could confirm with them.
In my case my account was upgraded from normal 25k account to Wealth directly, and then later got my sister added. So might have something to do with that. But in any case, pretty sure that exists.