Change Effective to in Leave Policy

Hello for all…
I assigned a leave policy to all my employees and set the Effective To date to 31/12/2024. Now, I want to change this date to 31/12/2025. However, I noticed that there is no option to modify this date. I also tried editing it outside of this window, but without success. How please how can I update this?

Does anyone have an answer, please?