This Feature has no settings, and it will simply add a new action bar after the topic and reply content (the footer of the content block). This Footer Actions Bar can hold one or more action buttons. By default, some new actions added by GD bbPress Toolbox Pro will be added there. It will not be visible if there are no actions to show inside this Bar.
If you need to show more actions than normal bbPress can, and you want to separate actions into two sections, with some actions moved to the Footer, this feature is very useful and highly recommended.