How To Make A Group Teleporting System?

I decided to change the idea, to making it so there is a circle where you enter it and it teleports you.

My seat script :

local seats = workspace.Seats.One

local teleportService = game:GetService("TeleportService")

local num = 0

local playersInSeats = {}

local countdown = false

-- remove the prints if you'd like

local function countDown()
	
	if not countdown then 
	
		countdown = true
		
		print("Start countdown")
		playersInSeats = {}
		
		for i = 5,1,-1 do 
			
			if num < 1 then break end -- if everyone gets off, reset timer
			if num == #seats:GetChildren() then break end -- if seats are full, teleport
			wait(1)
			
		end
		
		if num >= 1 then -- change this to minimum number of players
			
			print("Start game")
			
			local serverCode = teleportService:ReserveServer(game.PlaceId) -- change game.PlaceId to the place id
			
			for _,seat in pairs(seats:GetChildren()) do
				
				if seat.Occupant then
					
					local plr = game.Players:GetPlayerFromCharacter(seat.Occupant.Parent) -- occupant is the humanoid, hence why
					
					table.insert(playersInSeats,plr)
					
				end
				
			end
			
			for _,plr in pairs(playersInSeats) do -- can remove this if you like, it was to debug
				
				print(plr)
				
			end
			
			teleportService:TeleportToPrivateServer(game.PlaceId,serverCode,playersInSeats) -- change game.PlaceId to the place id
			
			countdown = false
			
		else
			
			countdown = false
			
		end
	
	end
	
end

for _,seat in pairs(seats:GetChildren()) do
	
	if seat:IsA("Seat") then
		
		seat:GetPropertyChangedSignal("Occupant"):connect(function()
			
			if seat.Occupant ~= nil then
				
				num = num + 1
				countDown()
				
			else
				
				num = num - 1
				
			end
			
		end)
		
	end
	
end