Running total in a range of cells

[heitres]

Private Sub Worksheet_Change(ByVal Target As Range)
  If Target.Address = "$F$7" Then Range("G7") = Range("G7") + Target.Value
End Sub

I Found this formula in another thread. and I was wondering if its possible for this to affect a range of cells that I want.

for instance I need it to go from F7:F20 / G7:G20, and also add exceptions( that the formula doesn't affect that one) to the ones that have the titles. for example F14.

Thank you for your time!