If you want to redirect the testimonial to an external page, say a full version of your customer's case study, you can add the external link in the Read more link field.
Let's cover how you can add some highlights to text testimonials, just like 👇
Click the text content or the ⌄ icon at the bottom-left to expand the testimonial card
2. Once the card expands, you will see a list of icons at the bottom, and you will find Edit icon, just click it.
3. You will see the following popup modal. Scroll to 'Read more link', paste the link followed by clicking 'update the testimonial' and voila! 🥳
