Attached Link: Product page for S.W.A.P.

Carrara does not have this option, but there is a small workaround. With the plugin S.W.A.P. from Inagoni (it is just $ 10), you can swap a camera and a light, eventually reposition with the camera, and swap it back with the light... SWAP can swap lots of things in your scenes, including shaders. I guess this is on the wish list for the next version!