Hi, Kelly,
I believe you can find the information you're looking for in the Windchill Help Center. For more information about OIRs, you could start with this topic: http://www.ptc.com/cs/help/windchill_hc/wc102_hc/index.jspx?id=ObjRulesChp_Intro&action=show.
For information about customizing attribute display (e.g., the UI behavior of the Location attribute), check the Attribute Customization topic: http://www.ptc.com/cs/help/windchill_hc/wc102_hc/index.jspxid=WCCG_UICust_PresentInfoUI_AttributeHandle&action=show
I hope you find this information helpful, and I'll welcome any feedback.
Regards,
Jane
Jane Zupfer
VP, Enterprise Products Publications
Ejzupfer@PTC.com
PTC.com