Oh and also a tip for doin this:Create a graphic (I use Canva) and add it as an image source. Put it on top of your webcam source.
when you create the graphic, size the entire canvas for whatever size you stream your cam at. So for example if you do 1080p stream you'd make the graphic 1920x1080 then create the little bottom bar so that it fits perfectly along the bottom of the canvas on Canva. Then download it with a "transparent background" as a png.