Is it possible to configure a new option for field "Partial delivery per item" in customer master?

Is it possible to configure a new option for field "Partial delivery per item" in customer master?

I am trying to add option E

Current options are:

___Partial delivery allowed

A Create a delivery with qty greater than zero

B Create only one delivery (also with quantity = 0)

C Only complete delivery allowed

D No limit to subsequent deliveries