Using SimCheck for Plagiarism Checking
To activate Turnitin SimCheck when creating an assignment, choose Online as the Submission Type, then choose Text Entry and/or File uploads.
As soon as you make these selections the Plagiarism Review options box shows up as seen below.
Choose which SimCheck options you want this assignment to use. Index all submissions should not be checked if this is a draft assignment and they will turn it in again. Except for that case, you would usually want to check Index All Submissions so that all papers submitted at our college can be checked against our other student's papers.
Generally speaking, we recommend using the settings seen in the image above, but of course, the choice is yours!