I dimly remember reading this can be done but now I can't find any
references....

Is there a way to check that particular GCV and Named Passwords are
populated on driver startup and causing a driver shutdown if they are
not?

I suppose I could do a rule that checks a flag (operation property)
and if its not set, check the GCV and Named Password and issue a fatal
event.

Driver startup would be the preference rather than have every IDM
event check the flag.