Final answer:
The minimum configuration for an internal HR Service used by HR professionals is HR Service and HR Template. This setup ensures that HR processes are properly defined and executed with consistency. Additional features like Record Producers or Lifecycle event types are not necessary for internal HR operations.
Step-by-step explanation:
If an HR Service is being used internally only by HR professionals and there's no requirement for the service to be accessible by employees for self-service, the minimum configuration needed would be Option 1: HR Service and HR Template. This includes the service definition and the template that outlines the necessary information for that service. The service itself defines the actions or transactions that the HR team will manage, while the template contains the fields and structure that must be populated during service requests to ensure consistency and efficiency.
Adding a Record Producer or a Lifecycle event type is not essential for internal use by a specialized team like HR professionals. A Record Producer is designed to create records through a service catalog and is typically used to streamline the request process for end-users, whereas Lifecycle Events are used for managing employee-related events like onboarding and offboarding, which may not be necessary for the basic functioning of an HR Service.