BORETTI CFBI9015IX Prescriptions De Montage Et Mode D'emploi page 226

Childlock safety
When not using the induction hob, set the childlock safety to prevent
children from accidentally switching on the cooking zones.
Ensure all cooking zones are switched Off, then turn the control knobs of
the left cooking zones simultaneously to the left (A setting) and hold the
knobs in this position until lights up on the cooking zones display; then
release the knobs.
To deactivate the childlock repeat the same procedure until lights up
on the cooking zones display; then release the knobs.
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