Thread:Silver-Haired Seireitou/@comment-11293505-20150409132030/@comment-1493741-20150409162238

You don't edit them as such, but you're essentially free to copy-and-paste the contents should you want to make a new one using someone else's as a base.

If you want to just use someone else's (Say, my Fullbringer template, or Prodi's and so on) that's down to just asking them (Or using it anyway, I can't speak for others but I personally don't mind if people use mine with or without asking; its what they're there for).