Slider Section

In WordPress Dashboard go to the Appearance submenu and click on Customize.

After clicking on customize you will in theme Customizer.

Here you have to click on Frontpage.

In Slider Section Here you Manage Slider Content.

Go to Customize -> Frontpage Section -> Slider Section

In WordPress Dashboard go to the Appearance submenu and click on Customize.

After clicking on customize you will in theme Customizer.

Here you have to click on Frontpage.

In Slider Section Here you Manage Overlay & Opacity.

Go to Customize -> Frontpage Section -> Slider Section

In WordPress Dashboard go to the Appearance submenu and click on Customize.

After clicking on customize you will in theme Customizer.

Here you have to click on Frontpage.

In Slider Section Here you Manage Animation & Speed.

Go to Customize -> Frontpage Section -> Slider Section

You have to use Slider Background Image Size 1920Px X 960Px
You have to use Slider Image Size 470Px X 235Px