I believe there are already standard documents, e.g. the huge binder the receptionist was referring to in the OP certified by a few "trusted experts", i.e. lawy

I believe there are already standard documents, e.g. the huge binder the receptionist was referring to in the OP certified by a few "trusted experts", i.e. lawyers. The question is by whom are these experts trusted, which in practice means who employs them. How would people get a list of these experts (government intervention?)