How to Set up Locations
You can have as many locations as you need. You can even have multiple network locations for the same physical location. For example, if you have both a wired network and a wireless network at home, you can create a separate network location for each. Here’s how to set up and manage locations on your Mac.
Automatic Location
Switching between home, office, and mobile connections is now just a drop-down menu away, but it can e even easier than that. If you select the Automatic entry in the Location drop-down menu, your Mac selects the best location by seeing which connections are up and working.
How to Set the Preferred Network Order
To help the Automatic option make the best possible guess for which network to use, you can set a preferred order for making a connection. For example, you may want to connect wirelessly to your 802.11ac Wi-Fi network operating on the 5 GHz frequencies. If that network is not available, then try the same Wi-Fi network at 2.4 GHz. Finally, if neither network is available, try connecting to the 802.11n guest network your office runs.