Citigroup has made several changes to its management team in the Asia Pacific region, creating a number of new positions there, a spokeswoman confirmed. Rodrigo Zorrilla, head of markets in the region, has been appointed chief operating officer. Michael Zink, chief executive of Singapore, is now head of the Association of Southeast Asian Nations area. Anthony Nappi, head of global transaction services in the Asia Pacific region, was promoted to chief administrative officer. Nadir Mahmud, head of foreign and local markets sales and trading, succeeds Zorrilla in his previous role. The moves follow the January appointment of Stephen Bird as sole chief executive for Asia Pacific. He was previously co-chief executive with Shirish Apte, who is now co-chairman of Apac banking.