Each of the four parishes provides two Trustees. The initial or “Founding” Trustees were directly appointed, one until 2015 and one until 2017. Since then all the Trustees are either appointed or elected by each parish for a four year term, with half the Trustees standing down every two years. If a Trustee resigns, their replacement serves their remaining term. Each parish has chosen their own method of appointing or electing their Trustees.