1. Testimonial 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 Homepage Section than Testimonial Section
In Content tab you will change Testimonial Content.
Go to Customize -> Homepage Section -> Testimonial Section -> Content
2. Background Image
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 Homepage Section than Testimonial Section
In Header tab you will change Background Image.
Go to Customize -> Homepage Section -> Testimonial Section -> Header -> Background image
3. Hide/Show Testimonial 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 Homepage Section than Testimonial Section
In Setting tab you can hide and show the Testimonial Section by clicking on hide/show button.
Go to Customize -> Homepage Section -> Testimonial Section -> Setting -> Hide/Show
You have to use Testimonial Image Size 80Px X 80Px