Not sure what you are asking for. If you are asking me to tell you how to set it up on your unit, you will have to search for what you need to do. I have not touched my setups in around 2 years. They just work. If I recall correctly they are all setup with bootCTR9 and they boot into GW by default and Luma with another button. It's been 2 years since I went through the process to get them running in their current state, so sorry can't tell you steps at this point. Never use Luma anymore I just have a set of SD cards I can swap out between their units in seconds that have all the 3ds games on them. I originally did try using Luma to do more with their setups, but when you are loading games on multiple units and switching game sets when they get bored with them, using CIA's takes forever to copy games over, it's way too cumbersome compared to just swapping a micro sd card.
Yes i was going to ask you about the steps as am on mega old firmware for the GW 4.5... but looks like everyone saying LUMA and FBI is way forward. I just loved how quick gateway was on loading