Luvenia

We just got ours delivered and moved it. There are no instructions where to place what tray and in what position. We are new to this and trying this blindly. We did het it up yesterday to 550 deg.F for just over 4 hours, wiped off the white stuff that bled but it is hard to find the holes where they came from, so it is hard to know if there are holes. I am eager to try cooking but will need more guidance!!