Making a custom trailer skin appear in trailer selection

[samaxe008]

Hello

As the title says I'm trying to get my custom trailer skin to appear in the trailer selection screen when picking up a job.

I use promods and notice there is a promods skin always available no matter the job and that's exactly what I'm looking to do.

I've got the skins for the trailers and a scs file that gets them onto trailer configuration but cannot find any info anywhere about getting them into the trailer selection menu.

Any help would be greatly appreciated.