I want to build a bedwarsmap on my map, but before we play we have to do all command blocks ourselves, which is nevig. Is there a command with which you can turn everyone on?
With redstone and / setblock REDSTONE BLOCK?
There are several options, you could e.g. Set everyone to respond to Redstone. Or you can chain them together:-)
Then connect everyone with redstone or take command blocks that place redstone blocks at your desired location