Sending Combo Rules from PSFSCM to PSHR

Hi,

I found the below in PeopleBooks but am looking for more information on sending combo rules from PSFSCM to PSHR. Would it flow through integration broker? What if BU's are different between PSFSCM and PSHR?

Publish to HRMS/SA (publish to Human Resources Management System/Services Accounting)This option is available when you have PeopleSoft HCM applications installed or processing specific transaction sources. Select the Process Group link to transfer to another page (COMB_BLD_PG_REQ) or COMBO_TRAN_SRC_COB to select the process groups to publish or process . This runs the Application Engine program, HR_ACCT_CD, to publish selected data from COMBO_DATA_TBL by using the HR_ACCT_CD_LOAD application service.