If you have leave types that should not be prorated e.g. Compassionate and Marriage Leave, please follow the steps below to set this:
Go to the Leave module.
Click Setup and select Leave Type.
Select the leave type and click on the Entitlement tab.
Under the Prorate Conditions, enable the options for No Prorate for New Hire and No Prorate for Cessation.
Click Save.
Go to Process Leave and highlight the affected employees with the leave type.
Click Recalculate.