Excel 2007 :: Posting Multiple Queries In VBA

I'm trying to create a sheet in Excel 2007 that organises shipments, the file is normally pretty large so I want to create a macro which does a few things, so when printed it's easier to work with. First one is to make a gap when items change in Column B and Column F, I can use the below code to make the gaps for one column but not both without making a separate macro. Is there a way to make the gaps on changes in columns B & F on one macro? (I have an example nearer the end)

Dim Rng As Range
Dim x As Long
Set Rng = Range("F12:F" & Range("F65536").End(xlUp).Row)
For x = Rng.Rows.Count To 2 Step -1
If Rng.Cells(x, 1).Offset(-1, 0).Value Rng.Cells(x, 1).Value Then
Rng.Cells(x, 1).EntireRow.Insert Shift:=x1Down
Rng.Cells(x, 1).EntireRow.Insert Shift:=x1Down
End If
Next x

After the data is separated I wanted to insert totals of the weights when there is a spacing, and a counter which stops after each spacing and restarts when the next items start.

Here is an example of the data I have before the Macro with Columns.

Column B
Column C
Column F
Column I

Destination of order
booking ref
Size
weight of orders

[Code] ........

This is how I would like the date to look like after the macro.

Column B
Column C
Column F
Column I

Count
Destination of order
booking ref
Size
weight of orders

[Code] ..........