Bydd y grŵp yn ymgynnull am hyd at ddwy flynedd, er ein bod yn rhagweld y caiff y tasgau cychwynnol eu cwblhau, gan gyflwyno adroddiad i mi, erbyn haf 2019.
The group has been convened for up to two years, although the initial tasks assigned are anticipated to be completed, and a report issued to me, by summer 2019.