Changing where another Camera renders

Hey. I have my layers set up like this:

 UI
 UI + 1

My UI layer is used for the actual UI. The UI + 1 layer is what I use for drawing, for example, spinning 3D models on top of the UI to make it look prettier. I have a seperate camera to draw these models, and the problem I'm having is that I dont know how to position the 3D model elsewhere on the UI. It's currently just on top of the entire UI.

Thank you for the answer!