You can move or reorder assignments after you've created them. You can manually drag and drop the assignment, or you can use the Move To option, which is also accessible for keyboard users. You can also move all assignments in an assignment group to another assignment group.
Note: If you are using Multiple Grading Periods, you cannot move assignments and quizzes that are part of a closed grading period to another assignment group. However, you can move open assignments and quizzes to another assignment group.
In Course Navigation, click the Assignments link.
Drag and Drop Assignment
You can use the drag and drop option to reorder assignments. Click the drag handle next to the assignment name. Drop the assignment in the desired location by releasing the mouse.
Move Assignment Group Contents
If you want to move all assignments within an assignment group, click the Options icon  and select the Move Contents link .
Choose Assignment Group
In the Move Contents Into sidebar, click the Assignment Group drop-down menu , then select the assignment group .
Note: Choosing a placement for the assignment group contents will place all contents in the same order as they currently exist in the assignment group. After you have moved the contents, you can reorder assignments within the assignment group individually.
In the Place drop-down menu , select the placement of the contents you are moving. You can move the contents to appear at the top of a new assignment group, before or after specific items within the selected assignment group, or at the bottom of the list of items in the selected assignment group .
Place Before or After
If you selected the Before or After option, click the third drop-down menu . Select the assignment group content item that should be before or after the contents you are moving .
If you want to move the contents to another location, change the sidebar placement options again.
Click the Move button.