Each module below can end in a short quiz that's actually a Microsoft Form, embedded right in the page. Because the form lives on forms.office.com, Microsoft — not this page — is what records who completed it.
src="…" value inside the iframe code Forms gives you, something like https://forms.office.com/Pages/ResponsePage.aspx?id=….Paste each module's link into its field. This is saved in your browser's local page storage, not sent anywhere — so if you're editing this file to hand off to your team, bake the links into the code instead (the FORM_URLS object near the top of the script).
Open any form in Microsoft Forms → Responses tab to see who finished it and when, with their org name attached. Click Open in Excel to export a roster, or wire a Power Automate flow to that form so each new response drops into a shared tracking sheet or Teams channel the moment someone finishes a module.
The progress bar in the sidebar is a courtesy for whoever's reading on this device — it's stored locally, not shared with anyone. Microsoft Forms is your real completion record.