Once the correct password has been entered, scroll to the parameter you wish to change with UP or DOWN ARROW keys, hit enter/mode (cursor moves to the right) then change the value by hitting an ARROW key, then hit enter/mode again to put the change into the memory. When an attempt to change the parameters is made without first entering the proper password, an error display comes up reading: ERR: MONITOR MODE. This is your cue that the password needs to be entered before you can change the settings.