Set an expiration interval
Enable Frequency of the password changing, enter a value between 30 and 180 days (60 to 90 days recommended), and click Save. Users receive an email 14 days before the password expires.
Security
How often passwords must change
Set how often passwords expire for the reseller and for user accounts.
Without an expiration interval, a password stays valid until it is changed. When password expiration is enabled, the reseller and user accounts must change their passwords after the configured number of days. Passwords cannot be reused until three other passwords have been set, regardless of whether expiration is enabled.
Navigate to General > Security > Password policy.