Insert New Lines in Sales Order - VA01


I have a Sales Order with 25 lines , and the requirement is to insert a new line between item 4 and 5.

Is there a insert option in VA01 screen so that the new item in placed between 4 and 5 and the item number is automatically adjusted.

I can see only a create new line in VA01 screen and this add's the item as a 26th item and not as a item between 4 and 5..

Sales order document type Conig : Item no increment : 10 , Sub-Item increment : 10

Thanks in Advance