Although the words 'involve and consult' appear together frequently in the legislation, the level of such involvement and consultation will depend on the nature of the service change that is proposed.
Fodd bynnag, er bod newid geiriad y cwestiynau a’r ffordd y cânt eu cyflwyno yn gallu helpu o ran eglurder, mae angen cofio bod hynny hefyd yn gallu effeithio ar gysondeb wrth adrodd ar niferoedd.