Oracle Integration Cloud (OIC) - HCM Cloud Adapter issue (Workers resource not found)

I am trying to use built-in HCM Cloud Adapter in my OIC integration. I have configured HCM Cloud Adapter connection successfully and I added it in my integration, with the goal to retrieve (get) worker details (employee) from HCM.

When I select Rest service Application "hcmRestApp", I am unable to find "workers" business resource. from the list of available business resources.

I tried to search by "Services" and I cannot find anything relevant to "worker" service.

I checked to see if the username I used in my HCM connection has credentials, and I see that it has all the needed roles and priveleges added to it.