cloning chip glitch

[mobius]

I'm trying to set this up in a level of mine but I can't figure a few things out

[to be specific I'm trying to do the things which I've seen on at least two levels which; cloning a player lets you win the level without stepping on an exit square.] In all the levels I've seen they have this whole set up under canopies or hidden somehow so it's difficult to tell how it's done on my own [even in the editor]

-first of all, when I simply place a player on a clone machine; I can select him as a player [then you cannot go back to another player], which I don't want (obviously)

-in order to win via this way, it seems you must clone at least two times to win, or 1 more as many times as actual players there are, or exactly as many players (including the one on the clone machine) there are initially. I tried a few different things but none seem to work.

Also I'm trying to do this for a level which there are 3 (playable) players.