Event Reason Derivation in SAP SuccessFactors Employee Central is triggered when changes are made to employee data through specific actions. Utilizing the "Actions" menu in the People Profile to update employee information initiates the Event Reason Derivation process. This mechanism automatically determines the appropriate event reason based on the nature of the data change.
In contrast, inserting a new record via the history UI, deleting a record in the history UI, or using the "Add New Hire" function does not trigger Event Reason Derivation. These actions either bypass the derivation process or involve scenarios where event reasons are manually selected.
Therefore, the correct answer is:
* B: Using Actions menu in People Profile
This approach ensures that event reasons are accurately derived and recorded in line with the configured business rules in SAP SuccessFactors Employee Central.