Zip tie tray help

I saw a few posts about zip ties on trays, but I am still confused about how they are attached.
A clear picture would be best to help. Thanks.

take one ziptie. put it though one of the holes on the bottom part of an angle. doesn’t matter if it’s the inner or outer hole. then string it across to the other side. take another ziptie, cut of the head, then use the head as a cap for the first ziptie.


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this is one way of doing it with c channel. if u have the other type tray then just make loops with two zip ties