Cancellation email
Before this implementation, when a handling agent was changed or a flight deleted, Leon was sending a cancellation email automatically.
However, this was causing sometimes issues, especially if (when the agent was changed) slots were meant to be kept booked.
Right now it is possible to choose if such a cancellation email should be sent by Leon, or not.
When HR sheet shows up you can unmark a handling agent to which a cancellation emiail was meant to be sent.