Follow the steps on the Turnitin help page:
Feedback Studio (LTI 1.3)
- Accessing the Similarity Report from the Assignment Inbox
- Understanding the Similarity Report
- Multicolor highlighting in the Similarity Report
- Viewing similarity matches
- Viewing all sources
- Using translated matching
- Managing paper view requests
- Accessing the text-only Similarity Report
- Viewing document flags
- Generating a new Similarity Report
- Managing exclusions and filters to refine the Similarity Report. (Small matches, templates, sources, quotes, bibliography)