Upload one PDF, define two participants, place each participant's visible signature block, sign with SIMA through QR, then approve and move to the next signer. This sandbox runs fully outside the main PaperCut app.
The uploaded PDF becomes the starting document. Each signer places one visible sign+stamp block, then the app sends the prepared PDF to SIMA using a QR-based sign request.
Click once on the placement surface to set the current signer's visible block. After callback arrives, use Approve / Next to move forward.