Not through Brightspace, but the instructor can submit work on behalf of a student through Turnitin.com
How do I sign into Turnitin.com?
Turnitin.com uses your campus email address for usernames, but a separate password. You'll need to reset your password on this page if you haven't logged in before.
The associated support ticket form covers all types of BrightSpace requests, including questions about the migration and training materials.