Approval timing: due windows, reminders and out of office — Out of office

In Settings, anyone can set a delegate and an until-date. While it's active, new asks aimed at them are redirected to the delegate at the moment they're created, with a visible trail showing who they stand in for. Asks already sitting in the queue don't move — redirecting history would falsify who was asked — and when the date passes, the redirect simply stops applying. Nothing to remember to switch off.