Dual outputs control allows you to derive feedback from two outputs and regulate each of the outputs to some degree. There is a trade-off to using dual output control because what you gain in regulation on one output, you can sacrifice on the other. This technique can be very helpful to get good regulation across multiple outputs while losing absolute regulation on the main output.
The Dual Outputs Control dialog allows you to select the output that you would like to derive additional feedback from. The dialog also allows you to adjust the ratio of feedback from each output allowing you to choose what influence each output has on the overall output regulation.
The appropriate circuit values are then calculated and placed in the schematic and BOM.