Adding Line manager of primary contact

Summary

HR Help Desk - Adding line manager of "Primary Contact"

Content

Hi, 

i was wondering if anyone knows how i would go about adding the Line manager of the Primary Contact to a report within helpdesk? 

I am using the "Service - CRM Service Request Real Time" subject area and this just gives me the option of adding the "Store manager" to the analysis. I have added all the manager fields in this subject area to the analysis however those fields are either blank or are linked to the person who created the SR and not the actual affected/primary contact.