Module Manager is a pretty useful mod for practically managing mods, basically, in sarbian's words: "is  mod that let you write patch file that edit other part at load time. With is you can edit squad (and other mod) part without overwriting their file." Now, again, this will mostly be for Windows. Step 1: Go to this link, and scroll down slowly to where it will say "Downloads:"  And it should look like this. Link:  Step 2: Find your KSP version, the latest version is pretty much 1.10