Looking for Tips on Multi-Rater Feedback Process

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..We are still new to such a structured Performance Review process, including the activities of Multi-raters as a system engagement rather than a free form reply..

With that, it is seeming that our Multi-raters are able to submit their "feedback" without making scoring designations or inputting any comments..

Is that really so?..

Is there a way to require at least a score if not the comment?..