In extending the CFMA scheme to multi-user Gaussian fast fading MACs, the key lies in adapting the decoding process to handle multiple users efficiently. One approach is to employ a multi-user detection technique that can decode linear combinations of codewords from all users simultaneously. This involves designing sophisticated algorithms that can handle the increased complexity of decoding multiple signals in a fading environment. By leveraging the principles of CFMA and extending them to accommodate multiple users, it is possible to achieve the benefits of compute-forward transmission in a multi-user scenario.