Thank you, lin821.
So, let me try to understand this in a simple summary.
With 3 people in my house, I will need:
1 ECB account (i.e. Card) for each person,
but
Can I tie these 3 different ECB accounts to the same online account for ease of manangement?
Another question, if I am filling a prescription for Mr. CTM, does that mean I need to use his ECB card to pay for his prescription?