Passwords for the Hosted Exchange 2013 platform are managed through the Cobweb Control Panel.
If you know the existing password for the account, you can change this as a user. However, if the existing password is not known, you will need to sign with an administrator account to change it.
Click on the display name of the user that you wish to change
From within the user management screen, select Change Password
Once you've chosen a password that matches the requirementsor used the generate feature, click submit
Reset your Password (User)
If you are a user without Administrative access and need to change your password, you can do so by logging in with your existing email address and password.