The time allowed for modifications would be set case by case, taking into account the nature and extent of the modifications required, but would normally be between 6 and 8 weeks.
Penderfynir fesul achos ar yr amser a ganiateir i gyflwyno’r addasiadau, gan ystyried natur a chwmpas yr addasiadau; ond, fel arfer, bydd yn rhaid eu cyflwyno o fewn 6-8 wythnos.