If you want to change the password you use to login to the VMS Gateway management web interface, you should:
Log into VMS Gateway
Click the Settings button at the top right of the page
Under Advanced look for the Admin password section:
Click the Change button
You must now enter your existing password, then enter a new password (twice). The new password must meet a certain level of complexity:
Must be between 8-32 characters
Must contain a non-alphanumeric character. Example: #@!
Must contain a number
Must contain an uppercase character
After you change your password you will be logged out - you should now login with your new password.
It is not currently possible to change the username (admin) or create additional users.