Follow the below procedure to edit the leave policy before you complete the leave year-end process for the period.
Under the leave admin section, you will find an option called "year-end process"
Go to the Year-End Policy section, this tab displays the leave schemes with the associated leave policies.
Click here on the edit button to modify the leave policy with regards to carry forward limit lapsing encashment etc. make the changes if required do not forget to save the changes.
Follow the same procedure to modify the other leave types under the scheme.