I am not clear on the question but i think you are looking for  the screen where the default elements order and rules are set for all transaction including delivery?

Rules on all>setup>sales>invoicing elements.

The order is set on entry invoice elemts position on the right action panel of the above screen.   If set to zero they do not appear.

There is no help on the delivery option.  Here is the help on the BP option. 

Flag used to define the position of this element in the invoice element entry grid in the BP record. This flag can take a value between 0 and 10.
The null value means that the user does not want to manage this element in the customer record.
In the opposite case, this flag must contain the position (line number) where the element must appear in the invoicing elements grid of the customer record.
When this element is displayed on the customer record, the default value is suggested and converted in the customer currency and can be modified according to the choice made for the Processing mode field.

The Invoice element reference data for Sales side is stored in SFOOTINV.  See PFOOTINV for equivalent on purchasing side. The actual (currency / percentage) values for the invoice elements are stored in the sales/purchasing documents themselves. For Sales Delivery see fields beginning with 'INVDTAAMT' in SDELIVERY table.