Our CA-1 Cable Anchor secures multiple cables in place to prevent accidental release. Use side knob to tighten CA-1 to the side of your L-plate. Then open the pinch bar by unscrewing the top knob. Slide your cables into the groove and tighten pinch bar until snug. Don't overtighten.
Note that knobs are not captive, so if you overloosen the knobs you may lose them. Don't overloosen knobs.