Step-1: Create a User & User Group
Steps to Create a User
- Login to your OCI console where parent billing account exist. 
- Navigate to Profile > Identity domain: Default. 

- Go to Users < Create User 

- Enter First name, Last name & email address. 
- Click on Create button. 

Create a User Group & Assign user
- Go to Groups > Create Group 

- Enter Group name. 
- Choose the user created in step-1 and assign to the group. 
- Click on Create button. 

- Please capture the group name as you will need them for subsequent steps. 
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