Help needed

Based on your description and screenshots, I'd say that header/ribbon is on a layer on the Master Slide.

• The Master would have a "show layer __ when the timeline starts" trigger, so that the header would show over the slide content when previewed or published. 
  • Since it doesn't show when you're designing the slide, you might want to add guides to ensure nothing important will be in that space.
• The text boxes might use variables for showing different section titles. Or there may be separate Master Layouts for each section.
• I assume the Home icon has a trigger to jump to a custom menu/home slide. 
• The # of # would be text with references to the built-in variables for slide numbers and total slides (either for the full course or for each section/scene).

Here are some related User Guide articles:

• Slide Masters in Storyline 360 - E-Learning Heroes (articulate.com) 
• Variables in Storyline 360 - E-Learning Heroes (articulate.com)