This article discusses how to create folders in the My Trints and Stories list. For Workspaces, see the relevant support article.
You can create a new folder by clicking on New Folder in the ribbon toolbar at the top of the My Trints and Stories page.
Please note, you are not able to create folders within the Recent Trints or Shared With Me list.
How do I move files into folders?
On the My Trints and Stories page, check the box next to the file
Click Move in the ribbon toolbar at the top of the page
Select the folder or create a folder there