Bank Reminders in a shared space
Everyone sees the reminders; the person who connected the bank keeps it running.
A bank connected inside a shared space belongs to that space. Everyone in it sees the reminders, and anyone can answer one — match it, log it, or dismiss it. When one of you answers, it is answered for both.
The person who connected the bank looks after it. Only they can reconnect or disconnect it, and new activity arrives when they open Carlo. If they have not opened the app for a few days, that bank's reminders will be waiting rather than current.
Everything else is shared normally — the transactions, the reminders, and the answers.