Click the settings icon in the top menu bar.

Click 'Settings' in the drop-down menu.

Click 'Minimum Pass Score' in the navigation menu on the left.

Flip the switch to turn the minimum pass score on or off.

When the minimum pass score is enabled, you can use the text box underneath to adjust the pass score as you wish.

Once you have finished adjusting the minimum pass score, click 'Save' to keep your changes.