Click on “Pages" on Left side of builder
Double click on the page to edit.
Click on “Elements.”
Click the “+” and hover your mouse over “Content.”
Select “Testimonial” from the menu.
Enter in the text you would like to appear in the space provided next to "Quote"
Choose location by clicking the drop-down next to “Location.”
Click the gray back arrow to save changes.
Make sure to preview before publishing.