The wires go under the left side of each screw.
Just above the left side of each screw is a folded over tab of metal - the bare end of the wire goes under the screw and up against this tab, which will stop the wire moving further up when the screw is tightened.
Just above the left side of each screw is a folded over tab of metal - the bare end of the wire goes under the screw and up against this tab, which will stop the wire moving further up when the screw is tightened.