Wei Zhang, CFA, manages accounts for high net worth clients including his own family's account. He has no beneficial ownership in his family's account. Because Zhang is concerned about the appearance of improper behavior in managing his family's account, when his firm purchases a block of securities, Zhang allocates to his family's account only those shares that remain after allocation to his other client accounts. The fee form managing his family's account is based on his firm's normal fee structure. According to the Standards of Practice Handbook, Zhang's best course of action with regard to management of his family's account would be to（     ）。