If you have your Microsoft 365 email account hosted by Next Century Media, you can easily change your password from the console.
Follow these steps:
First log in to the Next Century Media console with your Account Reference number and password
https://nextcentury.partnerconsole.net/
Refer to this guide if you have any issue:
How to log in to your Next Century Media Console hosted with TPP
From the Dashboard, select Office 365 Email under Administration
Under User Accounts, one the same line as the email address you want to change the password for, select Update
You will now be in Manage Office 365, type in the new password you require twice under Reset Password and then select Reset
NOTE: Leave Make this person change their password the next time they sign in unticked
Now select Log out top right
