I am a relatively new ksp 1 player and I am trying to build a new eve station (it’s my first time doing this) I have split it into 4 segments and don’t want to spend time and just reuse the same booster for each part of the ship instead of building a new one each time I have heard streamers mention “a booster library” I think this might be a way to reuse boosters but I could not find anything on the internet to help me. Please can someone explain to me how to make one? I can’t find a way to save boosters in the VAB nor a way to open two saves at once