Add Users to a Cloud Account with Identity Cloud Service
If the new users will be using and managing Platform Cloud Services from the Infrastructure Classic Console, then you must create and manage users from Infrastructure Classic Console.
If the new users will be managing Oracle Cloud Applications available from the Applications Console, then you'll use Applications Console to create and manage those users.
If the new users will be managing Oracle Cloud Infrastructure services from the Infrastructure Console, then you'll use Infrastructure Console to create and manage those users.