Click on the My Teams Tab on the Left Navigation toolbar.
Scroll down the Edit Your Team Information. Click on the drop-down box under Password Expire Policy. This policy will force your team users (members) to update their passwords when an option other than disabled is selected. You can choose either, disabled (the default setting, or 1, 3, 6, or 12 months) then click Save Team Information.
OWNERS are the only team users with Edit Your Team Information privileges.
The same 7 previously used passwords can NOT be used if the Password Expire Policy is set on 1, 3, 6, or 12 months. If disabled, your users can use the same passwords if needed.