In your sidebar settings, you will see the General tab is selected, if not select the General tab. Then you will see bellow options.
First, add or remove the slides from the settings. To add a slide click on + Add New Slide button. You can see all the slides.
In a single slide, you can change the Background, Border, Content Position(also can set the position by dragging the element), Title, Title Color, Description, Description Color, Button Text, Button Link, Button Colors(text and background), Button Hover Colors(text and background).
Also, you can Remove or Duplicate the slide.
In layout, you can set the Column count with different devices for responsiveness, and change the gap between the column.
Also, you can change the width and height of the slider.