Daeth y Rheoliadau Sefydlu i greu pedwar Cyd-bwyllgor Corfforedig rhanbarthol ar gyfer Gogledd, Canolbarth, De-ddwyrain a De Cymru i rym ar 1 Ebrill, ac maent yn caniatáu i Gyd-bwyllgorau ddechrau cyfarfod pe baent yn dymuno gwneud hynny. Mae hyn hefyd yn rhoi amser i’r Cyd-bwyllgorau roi'r trefniadau cyfansoddiadol a llywodraethu angenrheidiol ar waith a phennu’r gyllideb ar gyfer 2022/23 cyn dechrau'r swyddogaethau allweddol yn ystod 2022.
The Establishment Regulations to create four regional Corporate Joint Committees (CJCs) for North, Mid, South East and South Wales came into force on 1 April and allow a CJC to begin to meet, should it wish to do so. This also provides CJCs with a period of time to put the necessary constitutional and governance arrangements in place and to set the budget for 2022/23 before the commencement of the key functions during 2022.