Automating Opting Into Configuration Management

One answer

Figured out the answer: Yes. The request is exactly same for RM and QM.
POST to
https://SERVER/qm OR rm/service/com.ibm.team.process.internal.service.configurationmanagement.IProcessConfigurationManagementRestService/enable
BODY of request:
{"projectAreaItemId":"projectAreaItemIdValue","cmMode":"FULL"}