I'm sure this has been asked before, but is it possible to have report header visible in browse mode?
You may need to describe what you mean by a "report header" and where you have a problem with getting that to work.
You have a layout part called the Header. In list view, any thing that you put into that layout part is always visible at the top of the screen. You have a leading grand summary layout part, that you can use if you want a "header" that scrolls with the records in list view.
Retrieving data ...