Archiving
Done with a trip? Archive its group and it leaves your groups list.
Archiving is only for you. The other members keep the group in their list, nothing is deleted, and the balances don't change. It is the quiet alternative to deleting a group, which removes it for everyone, and to leaving it, which takes your account out of it.
Archive a group from its menu in the groups list or from Settings, General. Archived groups live under Archived groups, reachable from the groups list; open one as usual, or Unarchive it to bring it back to your list.
You stay a member of an archived group: you can still open it, add expenses and settle up.
This guide lives in the project repo: edit it there, and this page follows within a day.