Thanks for your question.
1. In AutoCAD you could make the one component a BLOCK, and then MInsert that component in your Drawing.
2. You can also do the same thing in FAB 3000. Make one component a separate "job" (menu: Job / Convert to Job). Assign any name you wish for the new job, and make sure to choose "Selection" for the option "Apply To". Here's a video tutorial showing me select some component pads and convert that into an array job that will export with Step and Repeat codes to reduce the Gerber file size.
Using Fab 3000
I want to use step and repeat to reduce gerber file size. I found this help topic which works.
But, I’m importing a DXF of my layout with all of my components. Only one of the components needs to be step-and-repeated. Using the technique in the help topic, the whole DXF import is step-and-repeated. I don’t want that, I only want to step and repeat one component. How do I do that?