Century PM-1378AB Manual De Usuario

Place forward-facing on vehicle seating position
with a vehicle lap/shoulder belt.  See “Vehicle 
Seat Belts” section.

Tether may be used to stabilize booster seat:

Attach tether hook (A) to anchor hardware 
(B) and tighten strap to remove any slack 
(fig. a).  

If tether anchor hardware (B) is not available, 
see “Installation of Anchor Hardware“ section.

If not using tether, see “Tether Storage” section.