Anyway, you need to reserve server with :ReserverServer(placeId)
local TeleportService = game:GetService("TeleportService")
local placeId = 0 -- your ID here
local serverCode = TeleportService:ReserveServer(placeId)
And then you just simply teleport the players there!
local players = game.Players:GetChildren() -- contains all players currently in game, if you want only some players then you will create a table containing selected players and pass it through
TeleportService:TeleportToPrivateServer(placeId, serverCode, players)
That might be the issue, I don’t know if I’m right but I don’t think you can reserve server codes of another game, even if you are the owner of the game. You will have to create multiple places under that one game.