How to hide the scores of questionnaire for employee, Manager?

Summary:

Hi Team,

We have a scored questionnaire and Questionnaire section weight is 50% for us and we want to include it in the overall summary Calculation. However, we don't want the employees/managers to see the scores while answering the questionnaire. So we want to hide these scores.

But, in the "Processing by role" section while I am trying to change the option, the field is greyed out. how to achieve this?

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