This feature is part of the Multi-Currency Add-On, which is an additional module for Big Business that supports transactions in foreign currencies.
The Misc. Bill tool does not support Foreign Currency entries. There simply isn't space for the Currency and Exchange Rate information necessary for each Bill.
This Solution provides an alternative for entering a Foreign Currency Bill without line items. (5966)
At present, the Multi-Currency functions are in their infancy and meet only very basic needs. Your input is needed to decide such questions as:
Adding built-in forms for printing Foreign Currency Purchase Orders
Extending the functionality to Sales, Banking, or other areas.
Allowing or disallowing editing of native currency amounts
Please forward your suggestions and real-world examples to email@example.com.