Is there any third party plugin for crop marks CorelDraw 2020 Mac Edition? I work in prepress and need more control over the length/thickness of the crop marks.
Sorry I have no solution fro you, but you can try to look here
There are VBA crop mark solutions available, but the poster here is asking about Mac.
Correct and the end of thread you can find how to modify ps file with crop marks (to make them thicker longer etc)