What does 0% mean in my Turnitin submission inbox? It means that the students work doesn't match sources in the Turnitin database.
How do I flag a submission for plagiarism/refer it to SIRT? By clicking 'Flag plagiarism' in the Coursework dropbox for the respective student.
How do I check similarity in a Coursework activity? If your assessment has Turnitin enabled, when a student submits their work in Coursework, you will see a column called Turnitin/Grademark.