Using integrated graphics AND nvidia gpu..

Hi, I would like to use my integrated intel chip to render graphics, while using the GPU (GeForce 950M) with CUDA. Currently, I’m only able to use one or the other, switching between the two using nvidia-settings. Setup is Ubuntu 16.04, Asus Q534UX. I believe this is possible, but have been unable to find detailed instructions on how to make it happen. Any help would be appreciated!