Input fields like text box, select box, radio and checkbox can now easily be added to default WordPress comment form.
WordPress Comments Fields is the new WordPress plugin that allows you to manually create new custom fields and add them to your comment form. All fields are saved as comment meta and displayed under the comment text.
Start by installing and activating ‘WordPress Comments Fields’ plugin in WordPress
Upon activation visit your admin area dashboard, click ‘Comments Fields’ from the left side admin menu. This opens up the plugin’s admin page from where you can create new fields for your comment form.
For adding a new field
You will simply need to select and drag it from left to the right rectangular box. Then you can set more options. All added fields can be rearranged, edited or removed anytime from the comment form.