In your instance, under Marketing Activities you will find a tab called 'Campaign Inspector'. If you click on it you'll find all campaigns in your instance (you can filter by activity) and the Flow Steps that are in there.
Searching for 'Send Alert' will narrow it down to the campaigns you're looking for.
You'll need to enable the Campaign Inspector from the Treasure Chest in the Admin Section.
That's great, thank you, will check it out. Appreciate your assistance with this one.