Note: If you want to set carryover for a leave type the "entitlement" must be "Limited to year" for that leave type.
Click on the “Leave Days” tab on the left menu.
On the leave days tab, click on the “Policies” and then select the rule which was assigned to the employees.
Click on the leave type which you want to set carryover.
Proceed to the "Carryover" step.
Choose the carryover limit from the selection menu.
Select the type's other settings from the next steps if you want then, click on the "Next" button from top of right and save changes.