Composure,Sequencer and Tracked Footage Question

Hey All,

I am getting stumped on something I am trying to accomplish. I have a tracked camera and green screen plate. I’m able to get my camera in sequencer with my environment all lined up and my plate keyed in composure. Now I just cant figure how to render these together in sequencer. Does any one have a answers or know of a tutorial they can point me too? Thank You