How to setup for bench on the force plate

Do you have any recommendations/guidelines for setting up a bench press on the force plate, when it is obviously larger than the area of the force plate?

Several labs and training facilities have built custom benches which sit isolated on the force plate. This is the best option. However, depending on design some off the shelf benches can be isolated on the plate. If the bench does not fit on the force plate a section of plywood can be placed between the force plate and bench to provide a larger area.