Lost on how to structure an Appsheet for PDF downloads with a selection to filter results

Hello - I’m looking to build an Appsheet that ultimately allows users to download one or more PDF documents. I would like to allow the user to locate documents by either 1) selecting a product area (hopefully using a custom icon) or 2) by selecting a category area (hopefully using a custom icon). Once they select either of these methods- they are finally presented with a list of filtered PDF files - the filter would be either of the PDFs for this Product selected or of the Category selected.

I’ve started with two Primary Views - Products and Categories - Products view show icons that represent the Product areas and Categories shows those icons. I’m not sure this is how to accomplish this App structure - appreciate any direction on how to structure this.

many thanks!