To copy a whole assignment from a (different) course, click here. To copy an exercise from a different assignment into your assignment, read this article.
Copy an exercise from and inside your exam
When creating exercises and questions, it is also possible to copy the exercises to another assignment, even from another course as long as you are instructor of the course. It is also possible with this option to copy a question inside the same assignment.
As can be seen in the image below, the option COPY is shown next to the OPTIONS button. This option is available for as well the exercises as the question. The question can be copied to any course and assignment you are instructor of.
After clicking COPY of a question, the following window will appear. From this window you can choose where to copy the question to. The course, assignment, exercise and position inside this exercise can be chosen. The question can also be copied inside the same assignment.
When copying a exercise, the window as seen below will appear. One option less is shown, while the exercise can not be placed inside another exercise. Now, the position also indicates the position between the other exercise in the assignment selected.