Click Create Role mapping and complete the empty fields with the following parameters:
Role mapping name: Assign a name to the role mapping.
Roles: Select the role you created with the document level security and the cluster_readonly role.
Custom rules: Click Add new rule to expand this field.
User field: backend_roles
Search operation: FIND
Value: Assign the value of the Department field in OneLogin configuration.
Search operation: FIND
Value: Assign the value of the Role name you gave on your Entra ID SSO setup for the read only users (backend role).