It's good that you've realised that you should have told us more about the project, but I think you need to carry that idea further. You've told us about the problem you've just discovered, but you're assuming that's the only one. That's a natural assumption, and it may be right, but it might not. Instead of telling us to "think of it as a simple clicky switch in a flashlight", tell us all about the project.
That would include a full schematic of how the board will connect, including descriptions of each component in the system, and preferably a physical drawing of how it will fit together. The better we can understand what you want to do, the more helpful and tailored our advice can be.
