Use co-authoring folders to share tests with other users. All tests contained within the folder will be accessible to the folder members. Folders allow co-authors to bypass their normal User Management rights and share tests based on the folder sharing rights defined when a folder is created or edited. Only users with the appropriate permissions (such as item administrators) can set the sharing rights when creating or editing a folder.
Co-authors are best managed at the folder level, so that you can create groups to collaborate on the items that are important to them. For example, 6th grade math teachers can work within a folder designed for them to write a 6th grade benchmark assessment.
For more information, see Test Co-Authoring
You can only delete a folder that has no items in it. Folders cannot be deleted if someone else is currently creating an item or test in the folder. Only users with the edit permission can delete folders.