How do you make sure that you don't have areas with static air when using a powered foundation vent system?

All of the powered vents should be connected to 1 set of controls running at the same time, and off at the same time.

As a general rule, all of the powered vents should be along one wall connected to 1 set of controls so that all of the powered vents are running at the same time, and off at the same time.