"To create a folder" means to make a new container or directory on a computer or device where you can store and organize files or documents. Full definition
Or even create a folder for people you would prefer to not have lunch with. (lawyerist.com)
You should also create a folder in your email program where you can place and save all your «welcome» emails you'll receive from each of the programs for future reference. (travelbythemile.com)
You can also create folders on this bar by dragging any app over another. (laptopmag.com)