Open studydeck.theconsultant.chat/app on your computer, add a student and some flashcards, and turn on Cloud Sync in Settings. Then come back here.
To scan the QR on the kid's PC, allow camera access for studydeck.theconsultant.chat in your browser's site settings, then tap Try again. (Or open your system camera and point it at the QR — it will deep-link back here automatically.)
Pick what you'd like the kid to focus on, then scan the QR on their screen.
The kid's screen should have opened the curated session.