If someone needs to switch dates, or you're winding down a cancelled event, you can move a booking to a different session or a different event.
Open the booking (or use Move to a different event from the Manage Event list).
Choose the destination event or session.
Confirm the move.
A move never charges or refunds anything automatically - the booking keeps its original payment. If the destination has a different price, handle any difference with the customer separately.
You can move a whole booking, or a single attendee out of a group booking. Cross-event moves work between events of the same kind.