The Form or Level Settings for a specific Level can be accessed through the Workflow > Manage Levels menu option.
The Level Settings are opened on the right side of your Manage Levels screen by clicking the outer box of the Level in the Reference Workflow column. If you hover over it, it will display a "Click to change your Level Settings" message:
In contrast, if you want to open the Form Settings, you must click the inner box of the Level that contains the Form's name, and the Form Settings will be displayed on the right side of your Manage Levels screen. Hovering over the inner box will similarly display a "Click to change your Form Settings" message: