Changing of passwords.
The passwords are maintained through the desktop version of Snapshot and you need to be a Snapshot admin user to do this.
When logged into Snapshot, go to the settings tab and select 'Manage Logins'.
You can edit any user and set the password in this section.
if you are using the web version of Snapshot and logging in as Admin you have to change the admin default password in the desktop version. This is enforced for security reasons.