how to restrict PII data in OTBI reports

Hello, I am creating a report in OTBI and I am using these subject areas "Workforce Management - Person Real Time" and
"Workforce Learning - Learning Records Real Time", Is there a way to restrict the PII data in this report? I tried to remove the data security policies and role hierarchy related to PII data, but it does not work, can someone please give me some advice on how to do it correctly.

Thank you in advance