Create second Hero Image Header

Hey,

I need your help with creating a second header above or below my navigation bar (menu). I already made a header with Generatepress --> Elements --> Header to show a Hero Image on my Homepage and my Category Pages.
But now a company reached out to me and would like to publish an AD Banner on my site. The AD Banner should be sitewide and situated above or below the navigation bar. I would like to keep my Hero Image Headers but also want to add the Banner AD.

How can I achieve this?

- Homepage Header as Hero Image
- Category Page with Header as Hero Image

Thanks,
Daniel