Your Dewalt scroll saw is a very good design and great for any kind of scroll sawing. I think most of us started with the generic saw you got from HF. I had one too from another company here in Norway. You can use a platter, but when I’m sawing small parts I usually just put some masking tape around the blade hole, but an auxiliary table would work well enough too. If you are doing fret work the hole can be a big advantage as it will let the small waste fall right through as you cut. Just a tip that if you are sawing real thin stuff it is hard to control the cut. It can be an advantage to attach it to another piece to make it at least about 1/4" thick.
Mike, an American living in Norway