Which action is NOT within the Registrar's authority when dealing with a valid consumer complaint?

The action that is NOT within the Registrar's authority when dealing with a valid consumer complaint is to require meetings to review proper procedures. While the Registrar has the ability to oversee matters related to consumer complaints and ensure compliance with regulations, their role typically encompasses actions aimed at investigating or resolving complaints rather than conducting meetings that are specifically about reviewing procedures in a broad sense.

On the other hand, the Registrar can engage in mediation between the registrant and consumer to facilitate resolution. They also have the authority to review completed agreements of purchase and sale if relevant to the complaint. In serious cases, the Registrar can order the immediate suspension of a registrant’s license to protect the public interest, even if such actions may be subject to appeal later. Obtaining a court order to detain a registrant falls within legal enforcement actions that may be invoked in severe situations.

Thus, option D does not align with these operational authorities, as it implies an ongoing, procedural review rather than a direct response to a specific complaint.