If there is more than one political group on the executive they can only be allocated as many chairs as is proportionate to their combined share of the council’s total membership.
Os oes mwy nag un grŵp gwleidyddol yn rhan o’r weithrediaeth, dim ond cynifer o gadeiryddion ag sy’n gymesur â’u cyfran gyfun o aelodau’r cyngor yn gyfan y gellir eu dyrannu i’r grwpiau hynny.