By default, assignments you create in your course will be assigned to everyone. You can specify a due date and availability dates that apply to everyone. You can also assign an assignment to an individual student, course section, or course group.
When Multiple Grading Periods are enabled in a course, assignments are also respected against closed grading periods.
Note: If you unassign a student or section to a differentiated assignment you have previously graded, the grade and submission are removed from the assignment. You can restore the submission by reassigning the assignment to the student.
View Assignments Page
On the Assignments Index Page, the assignment shows the dates assigned to the assignment.