How do I turn autocomplete on/off when I'm completing a form?
Autocomplete is a function of your browser. BreezingForms has no influence on this, nor does it fetch any input from earlier sessions.
Breezingforms does not use the HTML "autocomplete=off" attribute because even if autocomplete is desired it will not work anymore. Please see the documentation of your browser on how to activate/deactivate the autocomplete function.