When Staff apply for Multiply days leave if they happen to work a day during the leave due to staff storages or if a Public Holiday falls in that time or the Staff member become sick and provides a Medical Certificate for only a couple of day you need to be able to change those day to the new leave without having to go through the process of decline the leave and reapply especially if you have already applied timesheet to the leave application. Other system allow this I can't see why Tanda can't