Custom role requirement to access Fusion AI Agent Studio

Summary:

After reviewing the link : ,

we understand that a custom role must be created to access Fusion AI Studio.

Given that we already have a custom role for the Human Capital Administrator—for example,
“Custom_Human Capital Management Application Administrator Job Role”—once the profile option ORA_ASE_SAS_INTEGRATION_ENABLED is enabled,
can we simply enable the necessary permission group for that existing custom role and
add the Fai GenAI Agent HCM Administrator Duty role under the Roles and Permission Groups tab?

Above approach should avoid maintaining another role in our system . Please clarify if there is a hard requirement to create a custom role and enable the permission groups.