How bookings work — Bookings that repeat

A repeating booking is stored once, as a rule, and drawn for whatever period you are looking at. “Every Tuesday, forever” is literally true: no hidden end date, no cap on how many it will generate. Move or cancel one and you are asked how far the change should reach — just this one, this and every later one, or the whole repeat. Most of the time you want the middle one. It leaves everything before today exactly as it was. You are only asked when it could matter; a one-off booking just moves.