Please let me know if there is a law against just allowing anyone to tape the meeting.
Every law is a law under some particular jurisdiction.
What is legal in Afghanistan might not be legal in Britain, and vice versa. So it likely matters where you are, and Roberts procedures are not justification to violate applicable laws. Laws against recording conversations or images are generally motivated by protection of privacy. Your organization's by laws can explicitly permit recording, or they may prohibit it, or they may ignore the issue. But you may be exposing yourself to legal problems if recordings are made and you can't prove that everyone present was aware that the meeting was recorded.