To display chart like this use Pivot table, use Month as Dimension and write expressions for Sales, Costs1, Margin1, Costs2 and Margin2.
No drag the Month dimension along to the top of the table and drag expressions to vertically.
If possible, can you attach a sample file.
Hope this helps you.
Im attaching an example hoppfully it will be more clear.
The idea would be to create a margin1 between Cost1 and Cost2 and a margin2 at the bottom.
eerr.qvw 150.2 K