In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Frontpage Sections than Testimonial Section
In Setting you can hide and show the Testimonial Section by clicking on hide/show button.
Go to Customize -> Frontpage Sections -> Testimonial Section -> Setting -> Hide/Show Section
In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Frontpage Sections than Testimonial Section
In Setting you can change the Testimonial Section by clicking on Content.
Go to Customize -> Frontpage Sections -> Testimonial Section -> Content
In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Frontpage Sections than Testimonial Section
In Setting you can change the Testimonial Section by clicking on Background.
Go to Customize -> Frontpage Sections -> Testimonial Section -> background
You have to use Testimonial Image Size 80Px X 80Px