Hi
@David Willis,
Your question: "
How can I only show the header / footer on the first page only?" TL;DR: Define a class "hide_header" with box type none or none-inline. Define header and footer in your report page. Define a conditional style that hides header when pagenumber() is not 1.
Goto Report > Classes

Define a hiding class: "AmvaraHide"

Create Header and Footer on your report page + define conditional style

Hope this helped.
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Ralf Roeber
https://linkedin.com/in/ralf-roeber-470425a/------------------------------