How to have my laptop on display but only I can use anything but safari?

Having a party on saturday and im gonna leave my laptop on display so anyone can choose a song or change one, but i dont want anyone to have access to

Having a party on saturday and im gonna leave my laptop on display so anyone can choose a song or change one, but i dont want anyone to have access to anywhere else on the laptop.. Only the internet browser (safari for macbook air)

or:Having a party on saturday and im gonna leave my laptop on display so anyone can choose a song or change one, but i dont want anyone to have access to anywhere else on the laptop.. Only the internet browser (safari for macbook air)

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