In this map you can place some structures if you can you can try and change what structure it is and you can try to change the numbers that is in the command block i will make another map at some point if the world isn't in the world select you will have extract it then pull the world out of the folder then you put the world in the saves folder the folder name will be the same when you extract it so if it is not in world select the open the saves folder and open the folder that isn't in the world select and get the folder that has the same name and put that in the saves folder and it should be in the world select and enjoy