I have a Samurai Shark knife sharpener and dont know how to use it Answered

I bought a Samurai Shark Home Smart knife sharpener and lost  the instructions.  You put it on the edge of a table and draw the knife blade down, 1 time on each edge.  it has teeth on one edge and can be adjusted, the other end is just a razor to open boxes, etc...  It works great, when you know how to use it, but now my feeble mind cant remember how its done and I lost the instructions.  Can someone PLEASE help me I cant even cut an apple.  Thanks for any help I can get!!
Sally G