CyBear shows how to set up textures for a video wall model in Cinema 4D. Placing different textures and images on objects that are inside a Cloner group can be done by using the MoGraph MultiShader.

how to place different textures on objects inside a Cloner Objects

Taking it a step further, CyBear does a bit more than the usual linear and radial cloner, and provides some tips for how to keep your textures in line.