Expansion of Review categories in Documentation tool

I am using the documentation tool at the moment for teacher students evaluations as well as student self-evaluation. The only problem at the moment is that the three-fold review categories are not enough and I would need a five-fold category. So from something like "Needs improvement" - "Very good" in 5 steps. Would this be possible to do and if yes, how? 

Kind regards and thank you in advance. Attached you can find the tool I've created so far. ( In German) 

Expansion of Documentation tool
Content types: 
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BV52's picture

Hi SimonUniMainz,

This is not possible as the content is limited to 3. I have moved your post to the feature request forum.