Protecting a driver profile is only possible when the car is stationary.
To protect a driver profile:
Press Settings in the top view in the centre display.
Select Edit Profile.
A menu opens, where the profile can be edited.
Select Protect Profile to protect the profile.
Save your profile protection option by pressing Back/Close.
When the profile is protected, settings defined in the car will not be saved automatically to the profile. Instead, your changes must be saved manually by pressing Save current settings to the profile. When the profile is unprotected, on the other hand, your settings will be saved automatically to the profile.