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In no situation should a desktop computer be removed from someones desk, however there are no issues using someone else's desk if they are away.
Please ensure you shut down the computer once you are done using it and that you don't unplug anything already on the desk.
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Alternatively, if someone is away and has left their laptop in the office then feel free to make use of it.
Please ensure you shut you shut down once done with these and put them back where you found them.
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