Setting One (1) Expense Account Segment

Organization Name (Required - If you are an Oracle Partner, please provide the organization you are logging the idea on behalf of):

Flemish Government

Description (Required):

Normally the accounting segments are in concordance with the employee.
Sometimes one accounting segment needs to be overrided.

Is there an easy way to allow a field to change that one accounting segment?

Use Case and Business Need (Required):

To enhance user-friendliness, one accounting segment needs to be overrided. Maybe through one free field?

Enhancement Request / Service Request: