I am using homepage 03 layout and trying to fix a products categories in a header section and dont want to display them on other pages but these categories are appearing on each n every page of my site . and they are not showing like your demo theme.
Because you set the same header layout for all pages so it displays the same on every pages. To select a particular header layout for a particular page, please set it in Meta box which is at the bottom of the page.
To config everything on header, please go to Appearance > Widgets.