how to map rfc?

HI How are guys?

Iam working with rfc to SAP portal and the functional send me 20 names of RFCs , he wants that I identify WHAT RFCS are used in process of PT60  (program RPTIME00).

I tryed search in code of program RPTIME00 but dont find.Then I think maybe i can debug ,but the functional sayed :"there are many processes in that transaction"

Then I try by se37 search the programs that call the rfc but dont work(because it is called out) ,then I ask :How can I map waht RFCs are call in process?

Thanks.