I see that people are using 4 Infinia cards (Primary + 3 addons, given now addons are issued with different numbers), but that still leaves a couple of questions
1. Are we allowed to have different phone numbers on the add-ons? E.g. If I add my mother as an add-on card holder, I thought the phone number associated with her add-on card will still be mine (in past I have had an add-on for her, and that made all her OTPs come to me). How do we get the phone number associated with the add-on different from the primary card's phone number?