The following options are available by going to Settings > Premium
Select which display style/layout/format you would like to use on your reviews page.
Should a captcha be added to the submit review form to prevent spamming?
Options are plain text captcha and Google’s reCAPTCHA. Plain text requires image-creation support be enabled in your PHP installation. Plain text will also soon be deprecated as it is easier to bypass. See here for more information on how to configure Google reCAPTCHA.
If there are more than the maximum number of reviews per page displayed, should the next page of reviews be loaded automatically by AJAX, so that the page doesn’t need to be reloaded? This may not work if you also have a review widget displaying on the same page.
Should schema structured be added to the reviews when they’re displayed? This helps search engines to display your reviews in a more helpful format.
For microdata to work correctly, the type of items being reviewed needs to be specified.
Admin Notification Email
Should an email be sent to the WordPress admin?
Should a summary of the reviews be displayed at the top (average score, etc.)? This requires that you have your reviews grouped by product. This feature may not work as expected with in-depth reviews and/or pagination.
Clickable Summary Stats
Should visitors be able to click on the summary statistic bars to view all reviews with that score?
What is the maximum number of characters that should be shown in the preview in thumbnail format?
Thumbnail Read More AJAX
If you have selected the Thumbnail format, should the content be loaded on the same page when clicking Read More?
Require Admin Approval
Should new reviews have their status set to draft until an admin decides to publish them? See here for more info.
Require Author Email
Do reviewers have to include their email address (not publicly displayed) when they post a review?
Display Form on Confirmation
Should the submit review form be displayed when someone is confirming their email address?
One Review per Person/Product
Enter terms, one per line, that should block reviews from being submitted. This can include IP addresses that you want to block, review titles, author names, email addresses, etc.
Do reviewers have to log in before they can post a review?