Maintain exchange rates via web services

Hi,

As we know by design, allow to maintain exchange rate manually and automatically (using web services)

Source :POST dataFX Rates from Internet (Idea posted and delivered by SAP)

As per details mentioned, web service can be found in the Application and User Management work center under Input and Output Management in the Service Explorer view and search for "Maintain exchange rates". Shown below

I am struggling to locate the filed to maintain my exchange rate URL or web service setting. As I am not able to edit anything on the this screen.

Can you please help me to resolve this issue?

Thanks in advance

Govind Sharma