Hi pitxoun!
I just recently found the way it has to be done so..
easy step by step
Posts > new > set “Featured Image” and “Categories” (make a new categories for the sliders) > Go to your home page > Customize > “Home Page Slider” > Set select category to whatever you created before > done
P.S. : I don’t know if this is the offical way to do it but it worked for me this way.
Hope i helped!
Have a good day,
ce_hun
