How does managing an atom feed work?

Summary:

Hello everyone, we are using Atom Feeds to provide necessary information to Active Directory and in this way detect the accounts that should be unlinked, but we have some doubts with the handling of the information

Content:

The confusion occurs by only having one page in the documentation about "Configure an atom feed", we do not understand what exactly the configuration refers to, is it to allow input attributes or to handle the response with the chosen attributes?

Our requirement is simple, we only need to hide some fields like "PersonNumber" or "Phone Number" in the response when executing "<host>/hcmRestApi/atomservlet/employee/termination", however when configuring the atom feed "Person Terminated" (capture 1) the changes do not apply to the answer (capture 2), please help us resolve these doubts, thank you very much!