To create a new shared folder, go to the Vault and click on ‘Sharing Center’ in the left menu. Click '+' button to create a new shared folder.
To share an existing folder, go to the local Vault > right click the folder > Share Folder.
Add a Folder Name and click 'Create'. After creating the Shared Folder, you can then add users or groups to the Shared Folder list to share it with others.