These cannot really be controlled via the MMI other than being on / off. The only way to adjust the timing of the lights is via VCDS and alike. They can be configured to be from 0 to 90 secs and can be set independently of each other . VCDS and alike can also disable them independently also and along with all this you can also choose which lights to use, any combination of Daylight Running Lights, Fog Lights and Dipped Beams. You could actually reconfigured them to trigger turn signals, reversing lights, high beams etc but that would be just showing off