Flying Minutes is a feature with the Premium and Ultimate Plans. If your board subscribes to the Essentials Plan then you will not be able to see Flying Minutes
Should you need to delete a Flying Minute -no matter which stage it is in, please follow these steps:
Click on the Flying Minute to open it then click on the context menu on the top right and select Delete Flying Minute
In the confirmation box that comes up, you will need to type in Delete and then click on the red Yes button.
Note: if you delete a Flying Minute it can not be undone