How set one canvas to two cameras

I have one canvas that update info, I need that info showing on two or more cameras but not all cameras, how achieve this without creating one canvas for every camera.

@FernandoNamikaze

Can you even do that with all cameras/displays? I thought you could link one canvas to only one target display via Canvas.targetDisplay. If you can link one canvas to all cameras/displays, can you let me know how to do this? Thanks!