Passwords are managed differently for the different areas of Bluestore Live.
To change your web console password
An Enterprise Admin is the only user who can change their password to the web console.
In your web console, navigate to Settings - User Accounts to create a new user. The list of current users is displayed. Double click on Enterprise Admin (or highlight/edit) to open the dialogue for editing details.
Change the password and press save.
To change terminal passwords of Store Managers and Operators
Operators and Managers can change their own password on the terminal.
Log in to the terminal and navigate to Security - Change My Password.
You will be prompted to fill in your old and new password details, then press ok.