Login using an account that has 'Administrator' privileges. Click Settings on the top-right, and select Security Controls from the menu. In the resulting page, click Define password policy link. In the page that appears, select desired frequency from Password reminder requirement picklist.
nocÂ·turÂ·nal. adj. 1. Of, relating to, or occurring in the night: nocturnal stillness. 2. Botany Opening at night.
nocÂ·tiÂ·luÂ·cent. adj. Luminous at night. Used especially of certain high clouds.