You can edit your pool's scoring settings in your pools management area. Try these steps:
1) Hover your mouse pointer over the Pools tab,
2) Hover your mouse pointer over the extra navigation icon (it's 3 dots below each other) for the relevant pool,
3) Select the Manage option from the dropdown list,
4) Click on the Features button on the left and select the customization options that you'd like to activate for your pool.