Need to auto populate the Projects on the lines by entering the project value on the header

Summary:

 Need to auto populate the Projects on the lines by entering the project value on the header

Content (required):

Hello,

We have a critical business needs to avoid entering the project value on each sales order line, any way to have the project value entered on EFF on the order header and by using the (extenstions or transformation rules) to poulate the Project value on the order lines?