The top in question is
this one it is a discontinued item from LV, and OP got it at a good price. That top has build instructions (IN BLUE INK) on the web page, and was designed for a
free standing router table/stand or as
tilt top bench topperThis is the
S&S page though because of retention it won't be around a long time.
Essentially what you have is a flat metal router top. A lot will depend on what configuration you have on your table saw right now. IE: 20, 26, 50, or larger to the right of the saw blade. It will also depend on what type of framework that is supported on. It is possible you will need to remove some of, or all of what you have, or build onto your TS top and extend it to the right, so you can get the top to lie flat to your saws surface, and support the router top. Making a separate fence, or using the back side of your TS fence will also need to be addressed.
There are plenty of
plans, and ways to get this done Google images many of these pictures if you open them, and click "visit page" to the side of the pic will take you to a page where that entire table was built, some are just a solo pic.
I apologize up front for forwarding images, so of which I got from Google. For me it's the quickest way to put it in a pic, and to address several possible options while knowing little about your actual TS situation. Evidently this really irks at least one member.
Good luck. No matter how you decide to progress you just want the top to be level with your TS top, so your TS fence can move freely across the router top when not in use. If you posted a pic of your TS as it sits right now, I'm sure you will get plenty of suggestions.