Approval Management Engine Setup
Accessing Approval Management Engine (AME) is not possible as we access other responsibility / functions in Oracle Applications like Order Management / Application Developer etc.
AME is controlled by RBAC (Role Based Access Control). So in this case even you assign responsibility to the user but if user don't have the appropriate roles then you will not be able to access Approval Management functions.
Here attaching a document with detailed steps which needs to be followed to start working on AME.