You can add frontend form where users can add posts with reviews from 6.0.3 version.
For this, use bonus bundled plugin RH Frontend Posting PRO. You can download it from Rehub Plugins tab (required license registration in Rehub Registration ).
After plugin installation, create a form for frontend posting. Each form has its own ID. You can see it on the page with all created forms. Copy this ID. Go to Theme option Review Add review fields to frontend form . Add there ID of the form where you want to add review fields (review heading, score, and criteria). For example:
Add review criteria below this field. That’s all. You can also check other user functions of theme here.