Driving Read-Only with Authorization Rule
Use the IS_AUTHORIZED function in a PL/SQL Read Only expression to decide when data can be edited.
The Salary Review page needs to let HR Representatives edit Salary and Commission, but managers should see a read-only view of their own reports only. To make these two columns readâonly for users who are not HR Representatives, as shown below, use a PL/SQL expression to configure their Read Only behavior. These two columns are read-only when:
not apex_authorization.is_authorized('HR Representatives Only')

Description of the illustration use-authz-schem-read-only.png