When I cooked the lasagna in the crock pot, first you have to cook the ground beef and sort of make the sauce, but I just used Ragu so it wasn't much prep, I have a big sort of oval type crock pot, so first layer sauce, top with no boil lasagna noodles, you will probably have to break them up so they fit all the way across, it really doesn't matter if they get all broke up or overlap because they all cook together, then top noodles with another layer of sauce then mozz cheese, parm cheese, cottage cheese, I put cream cheese in mine, it makes it taste really good, however in the crock pot the pieces of cream cheese didn't really melt all that well, does better in the oven for the cream cheese version, but anyhow you just layer it as you normally would for the oven version, top with cheese, though, don't add the cheese on top until you are almost ready to eat it, if you add it at the beginning the top cheese layer will become hard and rubbery. Also, if you normally put a layer of cottage and or ricotta cheese with egg mixture, I would skip the egg for this version.
Another thing to remeber when crock pot cooking, you always have to cook any ground meats, never add them raw.
Kim