There are two main types of leaves in Kiu system, Allow to override leave limit and Unallow to override leave limit.
Unallow to override leave limit dates is given by manager and therefore, manager has to allocate leave days for employee to use on KIU system. Without allocation, employee can not register leaves day.
On the contrary, with Allow to override leave leave limit dates, employee is freely allowed to register for leaves date without any restrictions.
This guideline is divided into two parts. Part I is about how employee register leave on Kiu system and Part II is about how HR allocate leaves for employee.