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Just like with Windows, you first have to set up your work Mac for screen sharing. Press on the Apple Menu, and then press "System Preferences". 

Open the “Sharing” preference panel.

Uncheck all boxes except for Remote Management.  Press the Remote Management box to check it (if it is not already).  It may ask you to give access controls, if it does, check all the boxes in that pop-up window and hit OK.

Select options and Check all options

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