If this is the first time using the trap click to see how to engage the trap
Click an image to see details
Hold so that B and C are hanging with D pulled all the way to the right
Firmly pull A down and secure with your left thumb
Swing B across and secure with your right thumb
Swing C up and secure with your right thumb
Slide D to the left so it engages C
The trap should now be engaged and ready for use - see placing for where to set the trap