You are wrong.
There are many factors involved, like how clear is the code, is it easy to read, find where in the many lines of code is the part about companions.
Then since it considers companion a party member, you would have to find the code section about party members, to see how any changes to chocobo companion would affect that, as well as the code section involving the duty finder.
It could be very simple, or not so simple depending on how it is written.