Turnitin Detailed Assignment Settings Information
Creating a Turnitin Assignment is a multi-step process. In the first step, you create the Turnitin assignment activity and set its options which specify the rules for interacting with the assignment. This article describes the Turnitin Assignment settings in greater detail, explaining each option in the settings and what they can be used for.
For instructions on how to create a Turnitin Assignment, please see the GROK article Create a Turnitin Assignment.

General

Assignment Name
The name of the assignment will appear to both students and instructors.
Summary
The summary field is optional and can be used as both an internal or external field. Students will see the summary description if the Display description on course page checkbox is marked.
Submission Type
There are 3 options: Any Submission Type, File Upload, and Text Submission (allows students to copy and paste their document into a text editor).
Number of Parts
This option will divide the assignment into multiple parts, with each part contributing to the overall grade of the assignment.
Maximum File Size
Students attempting to upload a file larger than the maximum file size designated in this field will encounter an error message during the submission process.
Allow submission of any file type
This dropdown controls the file types that students are allowed to upload by dividing them into two categories: those which can be checked for originality and those that cannot. Choose No in the dropdown to limit student uploads to only those file types that contain highlight-able text and are therefore able to generate source matches in the originality report. Choose Yes to allow students to upload additional types of files such as images that cannot be compared to other sources.
Display Originality Reports to Students
This option gives the instructor control over students’ ability to view originality reports (also known as Similarity Report, a report that discovers any matching or highly similar text along with a similarity percentage). If this dropdown is set to No, students will not see the Similarity Index for their papers, either in the Student Submission Inbox or in Feedback Studio.
Grade Display
This option allows you to select the appearance of grades, either as a fraction or a percent, in the Submission Inbox and in Feedback Studio.
Auto Refresh Grades
Scores for an assignment can be set to automatically refresh or be refreshed manually. Instructors with large classes might consider manually refreshing grades if they notice that the refreshing of grades is slowing down the grading process.
Assignment defaults Checkbox
Set your selections in this section as the default for all future assignments.
Grade

Grade
The choice of a grade type (point or scale) determines which of the other two fields (Scale or Maximum Grade) that must be designated.
Grade Category
Moodle grade categories must be first created in order to appear in the dropdown.
Grade to pass
This field controls gradebook color-coding. Passing grades are color-coded green and failing grades are color-coded red.
NOTE: If more than one assignment parts were designated in the Number of Parts field in Section 1 (General), the Maximum grades of the parts should have a sum equal to the Maximum grade in the Grade Section.
Assignment Parts
The number of parts selected in the Number of Parts field (General Section) will determine the Assignment Part Sections created in the Turnitin assignment.

Name
The name for this specific part of the assignment.
Start Date
The start date for the assignment.
Due date
The due date for the assignment. Late submissions is a separate setting (in Originality Report Options).
Post Date
Students will not be allowed to see their Turnitin grade or feedback until this date. This date typically falls after the due date.
Max Marks
The maximum point value for this part of the assignment. The maximum point values of the parts of the assignment should have a sum equal to the Max point value of the assignment.
NOTE: The Post Date field does NOT control student view of a grade in the Moodle gradebook. If you would like to hide gradebook grades from students, you must do so in Gradebook setup.
NOTE: If the Max Points of the Assignment Parts do not have a sum equal to the Maximum Point Value of the assignment, the Assignment Parts grade will be weighted before their sum is calculated.
Originality Report Options

Allow Submissions after the due date
If set to Yes, students will be able to submit papers past the due date on the assignment/assignment part.
NOTE: Late submissions are for first time submissions only. Once a student has made an initial submission, they will not be allowed to resubmit past the due date.
Report Generation Speed
There are three options. Instructors can choose whether or not to allow students to submit papers after the due date has passed and when to generate an originality report. With the first two options, instructors can choose whether to generate a report immediately or on the due date and choose, if reports are generated immediately, whether or not to allow student resubmissions. The third option, if selected, will cause all student submission originality reports to generate on the due date. Resubmissions are allowed if this option is chosen.
NOTE: Allow resubmissions of papers until the due date: If students resubmit a paper, the originality report for the resubmission may take up to 24 hours to process.
NOTE: If originality reports are generated immediately, they will also be generated on the due date. The reports are generated twice. This ensures that student papers within a given class are compared to each other (on the due date).
Store Student Papers
Dropdown choices include no repository or standard repository. If papers are added to the standard repository, the student username associated with that paper will not be associated with the paper. Rather the image of the paper is tagged with an ID number and then the paper can be used in comparisons for future assignments, either yours or others at your own institution and at other schools that use Turnitin.
NOTE: For Rough Draft assignments that will have a final draft, consider not storing the Rough Draft in the Standard Repository.
NOTE: When working in a Development or Test environment, do not store papers in the repository.
Check against stored student papers/internet/journals, periodicals, and publications
These three fields give the instructor some control over the content of the originality report. The fields allow the instructor to choose which repositories to compare to when generating the originality report. Instructors can tell Turnitin to check against any combination of the following 3 categories: stored student papers, the current and archived Internet webpages, and journals, periodicals and publications. At least one of these fields should be set to Yes in order to generate an Originality Report.
Exclude Bibliography/Quoted Material/Small Matches
The instructor can choose whether to exclude the Bibliography, Quoted Materials, or Small Matches from the originality reports. To exclude small matches, define the number of words that constitute a small match by entering a number in the field. To designate a percentage small match, change the dropdown list from Words to Percent and enter an appropriate percentage in the field. If exclusions are designated under assignment settings, the exclusions will apply to all papers submitted for the assignment.
GradeMark Options
NOTE: Rubric Manager functionality is not addressed in this document. For information on the Rubric Manager, please see Grading in the Expanded Rubric Manager on Turnitin.

Attach a Rubric to this Assignment
Select a Rubric form the dropdown or Launch Rubric Manager to create or assign a rubric.
Enable e-rater grammar check
To enable ETS e-rater grammar check, choose Yes from the dropdown. This will make ETS e-rater available as a layer in the document viewer. Students will be able to immediately see the recommendations of e-rater for revising spelling, grammar, usage, mechanics, and style elements of their paper.
ETS Handbook
The selection made from this dropdown determines the default ETS handbook that is available to students when they review an ETS mark on their paper. Students can change the level of the handbook.
e-rater Dictionary
There are three selections available: US English, UK English or both.
e-rater Categories
Instructors can select any combination of the following e-rater categories to default on for both students and instructor: Spelling, Grammar, Usage, Mechanics, Style. The categories can also be turned on for individual student papers in Feedback Studio if ETS e-rater is enabled.
NOTE: The remaining sections (Common module settings, Restrict access, Tags, Competencies) are for Moodle assignments and are not affected by Turnitin, nor do they affect Turnitin. Once you have completed selected your settings, click either Save and return to course OR Save and display.
Common Module Settings

Available to students
Instructors can Hide/Show an assignment in the Common module settings.
ID number
identifies the quiz in grade calculations (this field is optional).
Group mode
The assignment can be set to Group mode or restricted to specific groups. For more information on Groups, please see Groups on MoodleDocs.
Restrict Access Settings

The restrict access settings allow an instructor to designate certain conditions under which a link to an activity or resource will be revealed. The criteria for revealing links includes pre-set date & time, a predetermined grade on an assignment or grade category (including course total), and/or a designation of completion for another activity or resource. For additional information, please see Restrict Access Settings on MoodleDocs.
Activity Completion Settings

Activity Completion settings allows instructors and students to track progress through the content of a course. Each content item (resource or activity) can be set to track completion. Although this is referred to as activity completion, it can also be applied to course resources. The Activity Completion setting can be found at the bottom of the edit form page that is used to create or update a resource or activity. For additional information, please see Activity Completion Settings on MoodleDocs.
Tags Settings

1. Customize the settings by clicking on the Tags heading to expand the section.
2. Type a tag inside the box and press the Enter key on your keyboard.
3. You can continue to add more tags if you wish.
Referenced from: Official Turnitin PDF (attached) and Turnitin.com