Bengisu Ecem I have a personal subaccount, and a shared subaccount for groceries with my spouse. I ordered a card for both. We also have other subaccounts, like for fixed expenses, but these are usually used with direct debits, so they don't need a card. For the occasional time I do need a card for those accounts, I just connect my card temporarily to the other account.
We also make subaccounts for our holidays, but then we connect our cards to our holiday account during our holiday.