Yn dilyn hynny, sefydlwyd Bwrdd gweithredu gydag arbenigedd allanol i gefnogi'r trefniadau newydd hyn, gyda'r bwriad o gynnal adolygiad ar ôl iddynt fod yn weithredol am bum mlynedd - carreg filltir sydd bellach wedi ei chyrraedd.
An operating board with external expertise was subsequently established to support these new arrangements, with the intention of undertaking a review once they had been in operation for five years, a milestone that has now been reached.