Rhaid i Weinidogion Cymru beidio â phenodi Llywydd oni bai eu bod wedi eu bodloni bod gan y person wybodaeth ddigonol o’r Gymraeg a hyfedredd digonol ynddi. Wrth benodi aelodau eraill y Tribiwnlys, rhaid i Weinidogion Cymru roi sylw i’r wybodaeth o’r Gymraeg a’r hyfedredd ynddi sydd gan aelodau’r Tribiwnlys gyda’i gilydd.
The Welsh Ministers must not appoint a President unless they are satisfied that the person has sufficient knowledge of, and proficiency in, the Welsh language. When appointing the other members of the Tribunal the Welsh Ministers must have regard to the knowledge of, and proficiency in, the Welsh language of the Tribunal members, when taken as a whole.