To avoid overloading the sentence, use only the position most relevant to the statement. In this particular case, “PSTD Academy Chairman” looks like it; “PSTD Board of Trustee,” which is a more internal designation, can be dropped and maybe mentioned later in the story.
“While WLP is just developing in the country, PSTD Academy Chairman Fe Marie Cabantac said the Philippines has the potential to become the training destination in the region because of competent Filipino trainers and world-class facilities.”