Excel VBA - Multiple procedures in 1 sheet to set up multiple timers

Not a programmer, came across a site that has a stopwatch timer.

Works great, i wanted to add multiple timers to about 6 rows, so i modified the procedure below. While at first it appears to work the problem is the next row that starts a timer will start where the row before it left off. How can i isolate each timer to be independent?

Public StopIt As Boolean
Public ResetIt As Boolean
Public LastTime
Private Sub CommandButton1_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C2") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C2").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C2") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton2_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton3_Click()
  Range("C2").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub
'This is the start of row 3

Private Sub CommandButton4_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C3") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C3").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C3") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton5_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton6_Click()
  Range("C3").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub

'This is the start of row 4

Private Sub CommandButton7_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C4") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C4").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C4") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton8_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton9_Click()
  Range("C4").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub
'This is the start of row 5

Private Sub CommandButton10_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C5") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C5").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C5") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton11_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton12_Click()
  Range("C5").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub

'This is the start of row 6

Private Sub CommandButton13_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C6") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C6").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C6") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton14_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton15_Click()
  Range("C6").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub
'This is the start of row 7

Private Sub CommandButton16_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C7") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C7").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C7") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton17_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton18_Click()
  Range("C7").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub

'This is the start of row 8

Private Sub CommandButton19_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C8") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C8").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C8") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton20_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton21_Click()
  Range("C8").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub
'This is the start of row 9

Private Sub CommandButton22_Click()
Dim StartTime, FinishTime, TotalTime, PauseTime
StopIt = False
ResetIt = False
If Range("C9") = 0 Then
  StartTime = Timer
  PauseTime = 0
  LastTime = 0
Else
  StartTime = 0
  PauseTime = Timer
End If
StartIt:
  DoEvents
  If StopIt = True Then
    LastTime = TotalTime
    Exit Sub
  Else
    FinishTime = Timer
    TotalTime = FinishTime - StartTime + LastTime - PauseTime
    TTime = TotalTime * 100
    HM = TTime Mod 100
    TTime = TTime \ 100
    hh = TTime \ 3600
    TTime = TTime Mod 3600
    MM = TTime \ 60
    SS = TTime Mod 60
    Range("C9").Value = Format(hh, "00") & ":" & Format(MM, "00") & ":" & Format(SS, "00") & "." & Format(HM, "00")
    If ResetIt = True Then
      Range("C9") = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
      LastTime = 0
      PauseTime = 0
      End
    End If
    GoTo StartIt
  End If
End Sub
Private Sub CommandButton23_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
  StopIt = True
End Sub
Private Sub CommandButton24_Click()
  Range("C9").Value = Format(0, "00") & ":" & Format(0, "00") & ":" & Format(0, "00") & "." & Format(0, "00")
  LastTime = 0
  ResetIt = True
End Sub

Private Sub Worksheet_SelectionChange(ByVal Target As Range)

End Sub