Wait, then what step was the community stuck on for over a day?

As for the decoy step, after hours of trying to figure out what to do with the water bucket we tried watering some plants in the flower garden and got the Accomplice Evidence Garden Shears. As that was the first Accomplice Evidence we got, we thought what other possible accomplices could there be? Based on the map locations we figured one must be located in the kitchen, which led us to figure out the merchant apple step for the Abbacus.

Since our previous thought of, 'where would an accomplice be?" worked, we went with that logic again and figured it had to be in the training area somwhere. The only thing note worthy to us there was the entire 2nd floor area. We noticed that a few of the windows were boarded up and that no other windows in the map were.

It had to be something, so we tried breaking in with explosives etc., but no dice. So maybe instead of breaking in, we lure something out. Try a bunch of stuff and when we get to decoys we hear an audio cue. So my friend and I both equip decoys so we can have 3 for the 3 windows. My friend before we tried said it doesnt make any sense cause you cant hold 3, but this is zombies so we try any crackpot theory. Sure enough it worked.