Users in a multi-user account can share files with other users in their account.
To share folders, go to the Files screen, and click on the Private link next to the folder name.
You can also set different permission levels for individual users: only view the files, make changes, or make changes and share.
To share an individual file, click on the Private link next to the file name. You will then be able to generate a secret link that you can share with people to allow them to view that specific file.
You can revoke access to shared files or folders at any time by selecting Disable.