Where do I put this clear backpack script within this script?

Soooooo, I found a free round Intermission/Round system here's the script

--Each player is placed slightly farther from the last
local m_bIncrementLocations = true
--Teleports all
local m_bTeleportAll = true -- too lazy to work on this

local m_iTimerLength = 10 --Round length in seconds
--Middle time
local m_iBreakTime = 10 --Intermission

Model = script.Parent
ActiveRound = Model.ActiveRound
RoundTime = Model.RoundTime
IntTime = Model.IntermissionTimeLeft

IntTime.Value = m_iBreakTime

function m_fnHandleTimer()
	if (ActiveRound.Value and RoundTime.Value > 0) then
		RoundTime.Value = RoundTime.Value - 1
	end
	if (ActiveRound.Value and RoundTime.Value <= 0) then
		RoundTime.Value = 0
			Model.IntermissionTimeLeft.Value = m_iBreakTime
		ActiveRound.Value = false
		for i, player in ipairs(game.Players:GetChildren()) do
			max = Model.LobbyBricks:GetChildren()
			randomlocation = math.random(1,#max)
			m_fnTeleportTo(max[randomlocation], player, i)
		end
	end
end

ActiveRound.Changed:connect(function(NewValue)
    if (ActiveRound.Value == false) then
		while(Model.IntermissionTimeLeft.Value > 0)do
			wait(1)
			Model.IntermissionTimeLeft.Value = Model.IntermissionTimeLeft.Value - 1
		end
		RoundTime.Value = m_iTimerLength
		ActiveRound.Value = true
		Model.IntermissionTimeLeft.Value = 0
		for i, player in ipairs(game.Players:GetChildren()) do
			max = Model.GameBricks:GetChildren()
			randomlocation = math.random(1,#max)
			m_fnTeleportTo(max[randomlocation], player, i)
		end
	end
end)

function m_fnTeleportTo(Part, player, i)
  		if player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
			if (m_bIncrementLocations == true) then
     			player.Character.HumanoidRootPart.CFrame = Part.CFrame + Vector3.new(0, i * 5, 0)
			else
				player.Character.HumanoidRootPart.CFrame = Part.CFrame
			end
   		end
end

function m_fnHandleActiveGame()
	if (ActiveRound.Value == true and RoundTime.Value == m_iTimerLength) then
		for i, player in ipairs(game.Players:GetChildren()) do
			max = Model.GameBricks:GetChildren()
			randomlocation = math.random(1,#max)
			m_fnTeleportTo(max[randomlocation], player, i)
			
		end
	end
end

--Run every second
while wait(1) do
	m_fnHandleTimer()
	m_fnHandleActiveGame()
end

Don't Get anxious This script is quite simple and what I wanna do is simpler Soo how do I get that Once every round ends that's this script will run

script.Parent.MouseButton1Click:Connect(function() --Click detector
    -- clear tools
    LocalPlayer.Backpack:ClearAllChildren()
    local toolInCharacter = LocalPlayer.Character:FindFirstChildWhichIsA("Tool")
    if toolInCharacter then -- make sure it exists before destroying it
        toolInCharacter:Destroy()

Its a simple script That I made that clears the player backpack so How do I make so that it clears everybody's inventory system before teleporting to the lobby???

From what it looks like, you should put that script inside of the function m_fnHandleTimer() function, like this:

function m_fnHandleTimer()
	    if (ActiveRound.Value and RoundTime.Value > 0) then
	        RoundTime.Value = RoundTime.Value - 1
	    end
	    if (ActiveRound.Value and RoundTime.Value <= 0) then
	        RoundTime.Value = 0
	            Model.IntermissionTimeLeft.Value = m_iBreakTime
	        ActiveRound.Value = false
	        for i, player in ipairs(game.Players:GetChildren()) do
	            max = Model.LobbyBricks:GetChildren()
	            randomlocation = math.random(1,#max)
	            m_fnTeleportTo(max[randomlocation], player, i)

	--here's where the other script might go
	--VVVVVVVVVVVVVVVVVVVVVVVVVV

	script.Parent.MouseButton1Click:Connect(function() --Click detector
	    -- clear tools
	    LocalPlayer.Backpack:ClearAllChildren()
	    local toolInCharacter = LocalPlayer.Character:FindFirstChildWhichIsA("Tool")
	    if toolInCharacter then -- make sure it exists before destroying it
	        toolInCharacter:Destroy()
	        end
	    end
	end