How do 360 4 Barrell emblems mount?

How do you manage to get the plastic retainers to stay on the panel while you jam the emblems in? My emblems have held up great for years with the way I did it. I have a few plastic retainers left and I'm missing a "DART" emblem from my car so I can snap some pics of the holes if necessary.

Why would his new emblems come with the retainers already installed??
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That would be great if you don't mind. Ya my initial impression after looking at the plastic piece was that the thickest part at the end closest to the emblem presses through the hole and when it snaps in past the hole on the inside it locks the emblem on.