You can add Comment plugin from Add element wizard
Now, set all the settings of Comment plugin
Language Fallback: Choose Default option to display the comment as per default language otherwise choose the Language Based Comment option for the multilingual comments.
Custom Date Format: Check this checkbox to use custom date format to display in Comment list.
Disabled Like Option: Enable the checkbox if you dont want to display the Like/Unlike feature on front end.
Enable Like Option: You can like/dislike comments.
Enable Form Rating Option: By enabling this,You can add ratings while adding comments!
Enable Comment Rating Option: By enabling this you can add ratings to comments!
Date Format: You can use any of the standard date format as well.
Time Format: You can use any of the standard time format as well.
Captcha Settings: You can set whether to display Captcha or not. You can select one of the options from below:
None: Disable Captcha
Image Captcha: Display Image Captcha. It will look like this:
If you are using Free version and have enabled captcha then Image Captcha will be displayed at comment form.
If you select Image Captcha, you need to rename _.htaccess file to .htaccess at this folder /typo3conf/ext/ns_comments/Resources/Private/
Google reCAPTCHA v2 : Display Google reCAPTCHA v2. Make sure to add Sitekey in Constant. It will look like this:
Add User Image: Add user image to display for all commments.