How do I reschedule orders to a different timeslot?

Find the order in the Operator Boxoffice, click the pencil icon, go to step "1. Buy tickets" and select "Pick time blocks" in the blue bar underneath. Here you can change the timeslot, click "next" and the timeslot will be changed.

New tickets can be send, by going to step "4. Payment & Delivery", set "Send tickets" to active and click the blue button on the right with "Finalize order".