How do I enable Turnitin for an Assignment?
Note: The Turnitin feature must be enabled by your institution at the account-level for it to be available in your course. Contact your Canvas Administrator for more details.
Add Assignment Details
Open Turnitin Advanced Settings
Set Turnitin Settings
Set when the students can view the originality report by selecting the originality report drop-down menu . Choose what type of sources to compare the assignment submissions against  and the type of material you want Turnitin to ignore . Click the Update Settings button  to save the new settings.