In 1986, he was appointed as the president of the Philippine Amateur Volleyball Association, then the country's local governing body for the sport of Volleyball. Chaves is also known for having spend his personal expenses to support the projects and initiatives of PAVA. At the peak of his career, Concoy contributed to the eventual growth of Philippine volleyball in the 1980s and 1990s including a victorious run of the Philippines men's national volleyball team in an international tourney in Kuching, Malaysia, the Manila hosting of the FIVB World Grand Prix in 1995, and the last gold medal of the Philippines women's national volleyball team in the Southeast Asian Games held in Singapore in 1993. Aside from his PAVA presidency, he is also elected as the president of the Southeast Asian Volleyball Federation.