Follow these steps to add a new folder:
In Jira, go to Projects.
Make sure you are on the right project.
Click the Documents tab and navigate to the folder where you want to create the folder.
Click Add > Add Folder. The Add Folder dialog will open.
NOTE The Add button is available only if the user has Create permission.Enter a Title (or a name) for your folder. This field is mandatory.
Optionally, enter a short Description for the folder.
Click Create. If all the required fields are properly completed, the folder is added and displayed in the Documents table. A message with the result of this action will pop up at the top of the page.