Officially, CBMs are significantly “self-installing” - that is, yes, you need position correctly and a few other things, but the actual cutting and such they do themselves.
Personally, I think that salvaged CBMs (what you get from a corpse) should require some kind of additional parts (which you could save from ones you’ve already installed, perhaps). Also, there should be facilities where people get them installed that have dedicated machinery for the purpose.
