The same way you normally do - with the Multi-function steering wheel!
The mic cable runs behind the knee panel and up behind the edge of the rubber strip on the A pillar, the mic clips onto the top of the trim, up near the side of the sun visor.
One of them had to go & the built-in Parrot system handles calls\data better than OEM, as you can scroll through numbers using the touchscreen & just touch an initial letter on screen to select the range of numbers starting with specified letter - rather than scrolling through one by one with the thumb-wheel! you can also see the whole name, unlike the on the DIS.