An Admin should assign the following roles:
Data Requests Manager: This role creates request forms to enable subject rights submissions on the Forms page and manages the overall status of each request on the Requests page.
Data Store Owner: This role validates the completeness of personal data searches for in-flight requests on the My Action Items page.
Data Discovery Manager: This role creates the data stores to be searched for personal data when a request is received on the Data Stores page and is able to manually search for personal data across all data stores on the People Search page.
Once these roles have been assigned you can proceed to Data store setup.