Miele DG 5080 - Manual (Page 34)

System lock
The lock prevents the steam combi oven being switched on
unintentionally, by children for example.
The appliance is delivered with the lock deactivated (factory
default setting). Before this feature can be activated, you will
need to change the factory default setting to "Permitted" (this
only needs to be done once, see "Settings / Safety").
To activate the system lock
^ Select the ) symbol.
^ Select "On" and confirm with "OK".
To deactivate the system lock
^ Select the $ symbol.
^ Select "Off" and confirm with "OK".
Additional functions
34