Can we limit the notification being received by managers when standard alert notification for perf?

Summary:

We have a Mid - year performance document which only include the Confirm review meeting held by manager.

Behavior: When the Standard Alert Notifications are triggered, managers will receive separate notifications for each of their direct reports. This means that if a manager has 10 direct reports, they will receive 10 individual notifications, one for each direct report.

Now, there is someone who suggested that Task Aggregation in BPM should address the concern. however it did not. https://docs.oracle.com/en/cloud/saas/human-resources/23b/faucf/aggregate-tasks-to-minimize-the-number-of-notifications-to-send.html#s20075961

Default setup of Task Aggregation: None 

1.     After changing the task aggregation setup to "