you can wire these up any way you want. You can split the whites per driver on different heat sinks if you want. I will require you to wire the two heat sinks together though. Which could cause problems if you need to remove one of them for some reason. If you have a controller you can make these as complicated as you want. Mine are set you to have the blues come on first at 20% then ramp up to 60% over 1 hour and stay that way for one more hour. Then they go to 100% for 3 hours. Then ramp down to 20% over 1 hour and stay that way for 3 hours. Then back to 100% for 3 hours. Then ramp down from 60% to 20% over 1 hour, then off. My whites follow the same schedule accept the come on 30 minutes later and turn off 30 minutes sooner.