Hi R.S
In the alert monitor for alert type "Product too late (dynamic pegging)" , you also have one column called as Variance from Target hours. This will provide you the information about delays in hours. You can use this information as filter. You can create your own variant > 24 and make it default so business users can only see the alerts with delay > 24 hours.
You can also use Threshold values concept.
Hope this information help you.
Amol