Foly: Look at ReworderEx3 in Reworder and notice which blocks are the same. As I said, any change that occurs on one instance of a certain block id also happens to all other instances of the same id.
Dermo: No, Reworder has nothing to do with MCEs. That article is the only article dealing directly with what you're asking about, so I recommend trying to read it again and stopping each time you get confused to consider what's being said and trying to figure out where the gap in your understanding is. If that really doesn't help, though, there are images in that article which show you exactly which events to use, where to put them, and what parameters to give to them, so it's hard to get more explicit than that.