You can easily show more or less stars in a user review or testimonials. Here's how you can do it:
1. Hover to the Testimonials block and choose the review you want to modify.
2. Hover over the stars icons to activate the editing menu.
3. There are five stars assigned to each rating by default. To add a star to the rating, click on Duplicate icon. Add as many stars as you like.
4. To remove a star and assign a review a 4-star or 3-star rating, click on Delete icon. A star will be removed automatically.
You can learn more about editing the Testimonials block in this tutorial.