In your picture above you have a round part just above the manual. There should be two parts there that you need to seperate. One attaches to the quiver and the other to the bows riser. The part with the lever goes on the quiver.
Thanks, sir! It appears that the circular part above the manual in the picture is one piece. It looks like the male end for the riser should be more of a wing looking piece and is missing. I'll give TP a call!