Hi Ilona
Are you planning to use this as a group-specific policy or for all users (global policy)?
There are settings to be set depending on your approach.
Group settings: https://www.ibm.com/docs/en/svd/10.0.1?topic=settings-group-password-policy
Global settings: https://www.ibm.com/docs/en/svd/10.0.3?topic=settings-global-password-policy
Best