How do I make a game queue where everyone stands in a certain location and gets teleported?

I'm trying to make a game where when any player stands in a certain location they all get teleported after a period of time. I have the teleportation script already, but I don't know how to make the queue part.

local MapSelect = script.Parent.MapSelect
local time = 30
local NumberOfMaps = script.Parent.NumberOfMaps.Value
while true do
	repeat wait() until
	script.Parent.time.Value == 0
	MapSelect.Value = math.random(1,NumberOfMaps)
	local player = game.Players:GetPlayers()
	if MapSelect.Value == 1 then

		for i = 1, #player do
			player[i].Character:MoveTo(game.Workspace.Part1.Position)
			script.Parent.time.Value = 3
		end
	end
	if MapSelect.Value == 2 then
		for i = 1, #player do
			player[i].Character:MoveTo(game.Workspace.Part2.Position)
			script.Parent.time.Value = 3
		end
	end
	if MapSelect.Value == 3 then
		for i = 1, #player do
			player[i].Character:MoveTo(game.Workspace.Part3.Position)
			script.Parent.time.Value = 3
		end
	end
	
end

try something like this:

local s = script.Stat
t = 0
while true do
 t = 15
 repeat
  t = t-1
  s.Value = "Intermission.. "..t
  wait(1)
 until t == 0
 s.Value = "Game starting!"
 wait(2)
local plrs = game.Players:GetChildren()
for i = 1,#plrs do
	local num = math.random(1,2)
	plrs[i].Character.Head.CFrame = CFrame.new(workspace.Teleports["Part"..num].Position)
    end
  t=100
repeat
  t = t-1
  s.Value = t.." seconds left"
  wait(1)
  until t ==0
end

this is from zingo dev. check out his vids for the full tutorial. just use this script. here are some links to the vids: first vid https://www.youtube.com/watch?v=SKnbCF4d558 sceond vid https://www.youtube.com/watch?v=UCK1vm1gz-I