Hi and thank you for the prompt reply.
Is it possible to export the existing images from layout as a template, so that they can be edited and reinserted.
A search for “repeating hatch pattern” on YouTube brings up this quick tutorial that seems to show how to create a repeating diagonal line pattern in Photoshop. It’s a fairly basic pattern (and different program from Inkscape), so you may need to look at some Inkscape tutorials, and then extrapolate from there to create what you’re looking for.