There are many optional settings that are available. You can read about all the optional settings on Turnitin's help site.
This guide will highlight some of the settings with important implications.
If you intend for the students to submit drafts, and you have a separate Turnitin submission folder for the final submission, you should change Submit papers to Do not store the submitted papers. This is so that the drafts are not compared to the final submissions.
Generally, you will leave Allow submission of any file type unchecked. If you check this option, students can submit non-textual files, which will not be subject to similarity checking.
These settings allow you to choose which repositories your students' work will be checked against. Generally, you will check all four.
If you want to use Turnitin for e-annotation only (i.e. you are not using Turnitin to check for similarity), you can deselect all the repositories. In this case, you will also want to change Submit papers to Do not store the submitted papers (refer to Submission settings above).
There are three options for Generate Similarity Reports for student submission.
If you do not want to allow resubmission, choose Generate reports immediately (students cannot resubmit).If you
You can also choose to Generate reports on due date (students can resubmit until due date).
Notwithstanding when the reports are generated, you can also choose whether the students can view the Similarity Report. Check Allow students to view Similarity Reports, in order for them to do so.
Check Save these settings for future use if all the optional settings you set are to be used for other Turnitin submission folders that you create in the future.