To change the distribute method, please follow the steps below
Average to Full
Go to the Leave module, click Setup.
Select Leave Type and select Leave Type ID as Annual Leave.
Click Entitlement, change the distribute method from Average to First Full and click Save.
Full to Average
Go to the Leave module, click Setup.
Select Leave Type and select Leave Type ID as Annual Leave.
Click Entitlement, change the distribute method from First Full to Average and click Save.
After applying the changes, you need to recalculate the leave entitlement for all employees
Click Process Leave and click Global Recalculate.
Select Leave Type as Annual, then click Confirm.