Of course, in an ideal world one of the following would occur:
a) You know which airline you are going to so the multi-talented instructors on your MCC/JOC can train you in the appropriate SOPs beofre you get there, easing your path through the type conversion. This is what we do for BA, Brit, MYT, Aer Lingus etc.
b) Your airline will give you your one and only MCC as part of your type rating - although the airline must be specifically approved to do this and not too many are.
Failing that, you try to find something which is typical of the industry - from my experience, for example, most of the charter type operators have similar SOPs.
BTW WWW, last time I saw a copy of the Orange SOP it was almost identical to the BA SOP with the monitored (split) approach removed. How did GO and easy compare?