So this phone remembers you and defaults you as the payer when you log something.
This deletes "" — everyone, every expense, every settlement on it — for good. Your other trips are untouched.
Right now this trip only lives on this phone. Turn on live sharing and anyone with the link sees the same people, expenses, and settle-up — updated instantly on their own phone.
Live — synced across every phone with this link
Anyone with this link can view and edit this trip — no login needed. Don't post it somewhere public.