First of all,

Thank you for downloading this action from Web3Canvas. 
Please share it with your friends if you like it. 

-----x---- INSTALL - The Easy Way ----x-----

If you have latest Photoshop version, it will automatically detect *.atn extensions.

1. Unzip the package
2. Double click the *.atn file
3. It will automatically appear
4. Expand the folder in the actions panel
5. Play the "12 col BS 4" action

-----x---- INSTALL - The Other option ----x-----

If the above method did not work, you can load actions manually.

1. Go to Menu => Window -> Actions or you can press Alt + F9
2. Click on the Action Menu (Right top of the Action panel)
3. Then Click "Load Actions" and Select "Bootstap 4 Grid System.atn" from Browse option
4. Now You will see New Group called "Bootstap 4 Grid System",
5. Expand the Group and play the "12 col BS 4" action


-----x-------x-------x------ FURTHER ASSISTANCE ----x--------x--------x----

Website: http://web3canvas.com/
Twitter: http://twitter.com/web3canvas/