How to Forget a Network on Mac

How to Forget a Wireless Network on Mac 
 
 Click the  Wi-Fi  icon in the top-right corner of the Mac menu bar. 
 Select  Open Network Preferences... . 
   
 
 Click  Advanced . 
   
 
 Click a network in the list to select it. (To select multiple networks, hold the  Command  key while clicking them.) You can also drag networks higher up the list to prioritize them over other local networks. 
   
 
 Click the  minus  (" – ") icon below the list to forget the selected network.