In the fourth picture you can see the barrell clamp. The shift cable lies in the tray, flat, an connects to the shift slider, with the aluminum peanut-shaped clamp and nut. The throttle cable is directly on top, connected to the large throttle arm bolt with a nut. The two cable barrells fit into the two hole liner in the clamp, one on top of the other.
After you set the cables in place, grab the two pointy projections on the top (one is broken off) and swing it up and toward the block. Insert the end of the tab into the clamp base, and grab the projections and swing it toward the lower cowl edge, and it will snap into place. The tab will push the cable barrells into the two hole liner of the clamp.
Practice it a time or two, and then adjust the cables and lock 'em in.