Where can you unlock the child safety lockout system?

In cars normally place on the side of the door; Open the door and look down the edge there should be a edge and a button flick it up or down.

The switch for the door child lockout system can only be found with the door open. With door open, examine the latch area of the door, you should see a small lever that slides one way or the other and is usually marked "child safety lock".