MIA-SAT

I have read the post twice and still have one question. Where does the system take into account companions for whom an EXP or a PLT have requested upgrades? Similarly, if an EXP give a spouse or a coworker a VIPOW for a flight and the VIPOW is in the record, where does the spouse or coworker fall on the list? Does the priority follow the priority of the EXP or PLT or does is the AAdvantager status of the passenger for whom the upgrade is sought? Is there a linking of records to those of the requesting EXP or PLT so the spouse / coworker or whatever rides on requesting passenger's priority?