• to provide support and advice to the Commissioner in relation to the Commissioner’s functions under the Welsh Language (Wales) Measure 2011, and to act, when necessary, as a ‘critical friend’
• rhoi cymorth a chyngor i'r Comisiynydd mewn perthynas â swyddogaethau'r Comisiynydd yn unol â Mesur y Gymraeg (Cymru) 2011, a gweithredu, ble y bo angen, fel 'cyfaill beirniadol'.