I think this is more a fixture than flatwork. I rarely use sheet goods and there seems to be a good amount of discussion as to how to go about breaking them down. I am making this knock-down assembly table:
Here's my method for dealing with ply; I use foam boards on the floor and a shop made saw guide to get a straight edge. Then using that edge I rip to width.
With the overarm DC hood, this is the amount of sawdust that gets missed after a few cuts. When I'm done with it, I swing it out of the way.
I set the fence to 3/4" larger than the dimension I want and then clamp on my 3/4" stop block. I also have this waxed strip of oak that locks into the router table miter slot to support the material that extends beyond the sled.
Now I use the sled to trim a good perpendicular edge, slide to the stop block and cut to length. In a very short time I have gone from a sheet of plywood to the four panels I am after for the first phase of this little project.
Back out to the shop . . . .