Final answer:
The module that allows HR administrators to restrict access without creating ACL records is Application Restricted Caller Access (ARCA).
Step-by-step explanation:
The module that allows HR administrators to restrict access to all cases on a COE or to specific HR Services without creating ACL records is Application Restricted Caller Access.
Application Restricted Caller Access (ARCA) is a module within HR management systems that allows administrators to define specific criteria for accessing HR services. It provides a way to control access without the need for creating additional access control list (ACL) records.
Using ARCA, administrators can set up rules and conditions to restrict access to HR cases based on various factors such as roles, user attributes, or specific conditions.