How to manage Slider 1 in Decorme?

1.How do I manage  Content in Slider Section 1?

From your dashboard, go to the Appearance > Customize > FrontPage Sections > Slider Section

Here you can manage content of Slider Section

Now Click on Publish.

2.How to manage Opacity, Animation & Slider Speed?

From your dashboard, go to the Appearance > Customize > FrontPage Sections > Slider Section

Here you can manage Opacity, Slider Speed & Animation Effects.