Added two strips of T-track to the top and built a fence with bolts and star knobs to adjust the fence back and forward.
The top of the fence will get a piece of veneer to hide the end grain of the melamine and the plywood. A hole needs to be drilled into the fence to allow for the bits to operate properly. A larger hole will be added with an adapter for dust collection. I didn’t realize how much dust a router can produce doing the most basic cutting jobs.