Super glue is recommended by the build manual. Personally I don't like that trim and build using a less permanent alternative, making removal post IVA possible.
My detailed build blog
Super glue is the instant solution. But if you ever want to remove the trim intact then there may be a problem & super glue will leave a nasty, possibly unremovable reminder on the carbon/lacquered surface.
A good contact adhesive such as Bostik (aka 'gorilla snot') is sufficient as long as the edge & trim is cleaned & degreased properly. Also on removing the trim the contact adhesive can be removed with White Spirit & not leave a trace.
The best way to apply is with a small brush or baby bud. Definitely required for getting into the contact surfaces of the trim.
I fitted mine previous with a few dabs of silicone - as I intended taking them off post test,