Members of the group are able to nominate advisers if they so wish, but the Minister for Finance and Trefnydd will have the final decision as to whether they attend.
Gall aelodau’r Grŵp enwebu cynghorwyr os dymunant, ond yr Y Gweinidog Cyllid a’r Trefnydd gaiff benderfynu’n derfynol a fyddant yn mynychu neu beidio.