Why do it:
Opacity controls the transparency of the filter (overlay) applied over the background image or video of the slide.
Procedure:
1. In the slider editing screen, scroll to the Slides section and select the tab related to the slide you want to edit.
2. Scroll through the slide content until you find the box titled Sfondo.
3. Inside the Sfondo box, locate the subsection titled Overlay.
4. Look for the field labeled Opacità.
5. Enter a numeric value in the Opacità field. The value represents the percentage and must be between 0 (fully transparent) and 100 (fully opaque).
6. Save the changes made to the form.
