When you see Password Expiration on a page, there is nothing you need to do to interact with the web part, until you are required to change your password. Bamboo’s Password Expiration product is simply a mechanism to notify you that your password is about to expire. Typically, it resides on a page or in a site and appears as a simple message within the web part, depending on how it has been configured, letting you know that your password is about to expire in x number of days.