You can configure reviewers' permission to edit/delete their reviews and vote helpful/unhelpful. In line with review's transparency, we encourage you to allow reviewers to edit/delete their reviews after submitting them.
To configure the settings, head over to Review → Settings tab :
- Click General settings → Accessibility.
- Select which customers are allowed to write reviews on Allow review submissions field.
- You can configure each permission on Allow reviewers to edit review, Allow reviewers to delete review, Allow 'This review was helpful' votes to field.
- Click Save.