Wessel_P

Me and some other people wanna play skyblock and because we couldn't find any servers that had normal vanilla skyblock like back in the day i decided to just start a Minehut server. But how do i change the world i spawn normally in to a skyblock world? I've seen people talk about uploading a world and then changing the level name to the name of the world i uploaded but that doesn't seem to be it. Anyone got suggestions?