Create a wifi hotspot in Ubuntu 16.04 laptop

Create a wifi hotspot in Ubuntu 16.04 laptop.txt

1. Click on Network Icon on top panel  
   🡪 Edit Connections
   🡪 click on "Wifi" in the pop-up
   🡪 click on "Add" button in the pop-up
2. In the popup, choose Hardware > Wi-Fi 🡪 click on "Create"
3. In the next pop-up
   a. Give connection a name. e.g. laptop-wifi-hotspot
   b. In "General" tab
      1. Uncheck 'Automatically connect to this network when it is available'
         Note: Otherwise, since the hotspot is always active, you won't see the menu entries to connect to other Wi-Fi networks in the network manager
   c. In "Wi-Fi" tab
      1. Provide SSID. e.g. laptop-wifi-hotspot-ssid
      2. Choose Mode: Hotspot
   d. In "Wi-Fi Security" tab
      1. Select "WPA & WPA2 Personal"
      2. Provide a Password
   e. Click on "Save"
4. Now to enable hotspot in laptop
   a. Click on Network Icon on top panel
   b. Click on "Connet to Hidden Wi-Fi Network"
   c. Choose "laptop-wifi-hotspot" as "Connection" from the dropdown
   d. Click on "Connect". Your network icon appear like this: ⮃
   
This method may be used to share the Internet connection of a laptop (connected to internet through a cable) to other devices via Wi-Fi

References:
  1. http://ubuntuhandbook.org/index.php/2014/09/3-ways-create-wifi-hotspot-ubuntu/
  2. https://askubuntu.com/questions/180733/how-to-setup-an-access-point-mode-wi-fi-hotspot