Explanation
According to the MFDA Rules, a Dealing Representative must not accept any purchase orders from a client until the Branch Manager or other designated person has reviewed and approved the New Client Application Form (NCAF) for the client. This is to ensure that the Dealing Representative has obtained and verified all the necessary information about the client, such as identity, investment objectives, risk tolerance, financial situation, and suitability of investments. The review and approval of the NCAF must be completed before any trades are executed for the client, unless there are exceptional circumstances that justify a delay. In this case, Quintin should have waited for Lupita's approval of the NCAF before placing the purchase order for Reginald.
References: 1: MFDA Rules as at December 31, 2021 - MFDA 2 (Rule 2.2.4)