I was given an almost new Bravetti Pla...

I was given an almost new Bravetti Platinum Pro toaster oven/broiler/rotisserie which needed to be cleaned out inside. aside from the numerous cooking trays and racks, there are 2 identical metal plates about 7"X9" with bent tabs and edges that I removed and can't remember how to put back in. This is not a convection oven. I know one went on the top and one on the bottom, but cn't for the life of me remember if they were heat shields and hooked in somewhere or what(how does the top one stay put?) Please help.