Panasonic CF-20 Series Operating Instructions And Reference Manual page 134

3. Pass the loop through the ring of the hand strap.
4. Pass the pen and tether through the second loop.
6. Pass the shoulder belt through the ring of the shoulder strap. Pass the belt through the adjuster and securely tighten it so it does not loosen.
Installing the hand strap MSR
<Only for model with Magnetic Stripe Card Reader>
Tighten the three straps (A, B and C) according to the following procedure.