When retiring a schedule, control room users sometimes accidentally click the delete button as the delete button is right below the retire button. It would be beneficial to add a warning when deleting schedules to prevent accidental deletion. It would be even more beneficial to separate the delete button from the retire button as well. If at all possible a recover function would be beneficial as well.
If the schedule is deleted it will take resources, time and research to create the schedule again. If at all possible, the bare minimum would be to move the button further away from the retire button or simply add a warning.