2012 Toyota Prius Owners Manual - Page 451

1-8. Safety information Type B STEP 1 STEP 2 Widen the gap in the seat cushion slightly. Latch the buckles onto the LATCH anchors. If the child restraint has a top tether strap, the top tether strap should be latched onto the top tether strap anchor. For owners in Canada: The symbol on a child restraint system indicates the presence of a lower connector system. Canada only Installing child restraints using a seat belt (child restraint lock function belt)