How to Use a Mac Laptop As a Hotspot

Connect to the Internet on your Mac laptop and open any web site in a browser to confirm that the connection is good.
Open 'System Preferences,' then click on 'Sharing.'
Select the check box for 'Internet Sharing' on the left side of the Sharing preferences, then choose your incoming Internet connection from the drop-down menu.
Click the check box for 'AirPort' in the list of outgoing ports over which you can share your connection. AirPort will not appear if it is chosen as the incoming connection. Your Macintosh will then appear as an available wireless hotspot.
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