You have to make sure ENABLE THIS SECTION FIRST
Go to Blog > Theme settings > Blog pages > Enable blog slider
You can go to Blog > Sections > Blog Slider
Choose blog to show post
Different format options display for various languages.
How many articles you want to show per row
At the end of cells, wrap-around to the other end for infinite scrolling.
Set is '0' to disable autoplay.
Auto-playing will pause when the user hovers over the carousel.
Creates and enables previous & next buttons.
Aspect Ratio Custom will settings in General panel.
The first value is the horizontal position and the second value is the vertical.
Hope you success!!