To integrate with the reset of my machines, I need to install
PAM. When I install it from (binary) package, it installs into
/usr/pkg/....  However, I don't see how it gets called from there. It
seems to me that at least the majority (non-documentation parts)
should be located from / , but I know so little about the package
system that I'd rather, as a learning exercise, do this 'properly'.

Hints? Pointers?

Cheers