Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
Features provided by Azure DDOS Protection are listed here.
Currently, there is no option to customize the logic - The thresholds are always auto-tuned based on the VNET's or IP's traffic pattern.
If you wish you may vote in Azure Feedback Hub forum requesting this feature and providing a brief of how this might help the customers and their end users.
All the feedback shared in these forums are monitored and reviewed by the Microsoft engineering teams responsible for building Azure
Kindly let us know if this helps or you need further assistance on this issue.
Thanks,
Kapil
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