In Angular portal 9.2.1 , Can a user re-route attestation decision to another identity ?

You will find more about Apointing other attestors  in the documentation https://docs.oneidentity.com/bundle/one-identity-manager_attestation-administration_9.2.1/page/sources/att/attcaseotherattestors.htm 

You will find more about Apointing other attestors  in the documentation https://docs.oneidentity.com/bundle/one-identity-manager_attestation-administration_9.2.1/page/sources/att/attcaseotherattestors.htm 

Yes, thats a great start for me but am specifically wanna know if we can delegate attestation decisions to another identity directly from Angular web portal 9.2.1? 

Who should be able to delegate the attestation decisions? What is his role in this case, and how does he relate to the attestation case?

As a valid approver, I can delegate the decision for a single case in the Angular Web Portal if the approval workflow is set up accordingly (see my documentation link).