Ducati MULTISTRADA 1200S ABS 2015 Workshop Manual page 499

Apply the recommended grease to the thread and underhead of screws (2) retaining calliper (1).
Pre-tighten the two screws (2) to a torque of 2 Nm ± 10%.
Pull the brake lever many times.
Hold the lever pulled towards the handgrip and simultaneously tighten the screws (2) to a torque of 45 Nm ± 5%.