How to get single tab at shipment cost document

Hello All,

Here we got stucked with issue of having only one tab i.e, shipment cost tab.

Now we are getting 2 tabs, Delivery Item & Shipment cost item, but our requirement is to get only one tab i.e, shipment cost item tab.

So could you please help me out how I can achieve this.

Cheers,

Bharat