From the manual on how to change the wiper blades. Actions 1 and 8 are relevant.
1. With the bonnet in closed state, and within 20 seconds of setting the START/STOP Switch to the OFF position, operate the wiper stalk switch by pressing down and releasing, the wipers will enter the 'service position' and stop on the windscreen.
2. Lift the wiper arm away from the windscreen.
3. Press the button on the wiper arm (as illustrated), and pull the upper end of the wiper blade outward to disengage from the wiper arm.
4 Unhook the blade from the wiper arm and discard.
5 Locate the new wiper into the slot of the wiper arm.
6 Push the wiper blade towards the arm until the wiper blade is engaged.
7 Check whether the wiper blade is fitted correctly to the arm before positioning on the windscreen.
8 Operate the wiper stalk switch by pressing down again and releasing, or set the START/STOP Switch to ON, the wipers will exit the service mode and automatically return to its original position