Most of the Buyout subcategories, will include system supplied choices and one special option located as last option in the list. This special option will allow you to enter your own custom option directly in this subcategory. This includes for example, mechanical seals, drivers, and couplings. The image below is an example of mechanical seal quotation and it will replace the system supplied mechanical seal price.
The "Special Seal" description can be overridden to provide special instructions to the user on this particular option. In this option for example it is instructing the user to select a special seal in the mechanical seal subcategory. From here this option function just like the Add Options feature.