64 Barracuda lower rocker trim

I have never used these ones specifically but numerous that look to be the same style. Normally you install the clip onto the car then fully install the center pin to "lock" the tabs open into the hole so the clips do not fall off, then "snap" the trim onto the clips.

Someone else may be able to confirm whether or not I am correct on this method. I know it's correct for the thinner trim clips on the lower of my 63 Dart 170.