Hello Ciaran,
we use Emani Template on this site: https://th3-projekte.de/_schule/

In the template configuration we have set in Body/Header Styling > Sticky Header to YES.

We added the module j51_layerslideshow (the one out of the Emani installation folder).
There we set the value in General Setting > Overlap Header to YES too.

The result you can see on the site.

The logo is on the wrong place and so is the menu.

If we deactivate the header-1 module, all looks correct on the first sight but it is not sticky..... so no, it's not correct.

Any workaround or idea how to fix this?

Thanks in advance
Oliver