I enter sales invoices as sales orders initially. Some of the orders have multiple projects. But there is no column to allocate individual lines to a project. Only the entire transaction can be added to a project. 

Does anyone know if there is a setting available to add the project column to individual lines on the sales order? The user settings box for 'always apply allocation to entire transaction' is unchecked. I've added a screenshot of the form. As you can see there is no column on the line to allocate to a project. Thank you.