We want a notification to be sent in case we delegated a user to create expense report for another user. (Note: The notification should sent to the delegated user not the expense owner).
@User_SCWU9 - From your query it seems you are looking for a option/setting at the Fusion Application side. Queries related to Fusion Application should be posted in the below community.
https://community.oracle.com/products/oracleanalytics/categories/otbi